View Full Version : Introducing the 7.62X40-the new .30 caliber AR solution
wilsoncombatrep
03-31-11, 15:49
http://www.wilsoncombat.com/762x40wt.htm
The Practical .30 Cal. AR-15 Solution
Available now from Wilson Combat - The 7.62x40 WT (Wilson Tactical) is an all new powerful .30 caliber cartridge solution for the standard AR-15 rifle platform that is inherently accurate, low recoil and only requires one unique part - a new barrel. The 7.62x40 WT works with all other standard pattern 5.56 AR components and is completely reliable with the new Lancer® L5 AWM magazines as modified by Wilson Combat.
Ideal for Hunting and Tactical Use
The wide range of available .30 caliber hunting bullets makes the 7.62x40 WT an ideal choice for hunting of medium to large size game with the downrange ballistic performance only a .30 Caliber projectile can deliver. Experienced shooters will be pleased by the match grade accuracy and terminal effectiveness and energy easily exceeding the 7.62x39 Russian, while novice shooters will appreciate the mild recoil and low report.
Tactical shooters looking for a hard hitting, fast handling, practical .30 Caliber AR-15 service carbine will find the 7.62x40 WT a viable alternative to the 5.56x45 for self defense and law enforcement applications. With 18/19 or 28/29 round capacity using Wilson Combat modified Lancer® L5 AWM 5.56 magazines, maximum firepower is retained.
Components, Loaded Ammunition and Complete Guns
The 7.62x40 WT cartridge is based on a standard Lake City 5.56x45 NATO/.223 cartridge case that goes through a simple shortening and reforming operation to achieve appropriate cartridge dimensions. Wilson Combat has reloading dies, case gages, cartridge cases, handload data and a variety of loaded ammunition to fully support this caliber.
A complete lineup of Wilson Combat 7.62x40 WT rifles, uppers and match-grade barrels are also available now.
Ballistic Performance Comparison:
7.62x40 WT (16” Barrel)
110 gr: 2450 FPS Muzzle Velocity and 1466 Foot Pounds of Energy
125 gr: 2400 FPS Muzzle Velocity and 1599 Foot Pounds of Energy
150 gr: 2200 FPS Muzzle Velocity and 1612 Foot Pounds of Energy
5.56 Nato (16” Barrel)
55 gr: 3150 FPS Muzzle Velocity and 1212 Foot Pounds of Energy
62 gr: 3000 FPS Muzzle Velocity and 1239 Foot Pounds of Energy
77 gr: 2750 FPS Muzzle Velocity and 1293 Foot Pounds of Energy
7.62x39 (16” Barrel)
123 gr: 2320 FPS Muzzle Velocity and 1470 Foot Pounds of Energy
6.8 SPC (16” Barrel)
110 gr: 2550 FPS Muzzle Velocity and 1594 Foot Pounds of Energy
300 BLACKOUT (16” Barrel)
125 gr: 2275 FPS Muzzle Velocity and 1436 Foot Pounds of Energy
NOTE for Handloaders: Once a 7.62x40 WT case has been fired once it will be fire- formed and provide approximately 1 gr. additional powder capacity and the potential for approximately 25-50 FPS more velocity at comparable pressure levels.
Trajectory and Remaining Velocity:
125 gr. Nosler Ballistic Hunter, 2375 FPS MV, Zero range 175 yards
100 yds +1.7” 2156 FPS
150 yds +1.1” 2052 FPS
200 yds -1.6” 1951 FPS
250 yds -6.6” 1854 FPS
Available Wilson Combat® Rifle Models
SBR Tactical Model, 11.3"
Forged 7075 Upper (Flat Top) and Lower Receiver
Wilson Combat SBR Tactical Match Grade Barrel with 6 Groove / 1:12 Twist (Conventional or Polygonal Rifling) or Noveske Polygonal 1:11 Twist
Carbine Length Gas System with Lo-Profile Gas Block
Threaded Muzzle (5/8 x 24) with Accu-Tac Flash Hider
Wilson Combat T.R.I.M. Rail - 10.4"
Ergo Pistol Grip
Wilson Combat Tactical Triggerguard
Rogers/Wilson Super-Stoc
Wilson Combat TTU (Tactical Trigger Unit) Single Stage, 4#
Premium Mil-Spec Bolt and Bolt Carrier, MP Inspected, NP3 Coated
Mil-Spec Hard Anodize Finish on Upper / Lower Receivers
Armor-Tuff® Finish
20 Round Modified Lancer L5 AWM Magazine
Recon Tactical Model, 16"
Forged 7075 Upper (Flat Top) and Lower Receiver
Wilson Combat Recon Tactical Match Grade Barrel with 6 Groove / 1:12 Twist (Conventional or Polygonal Rifling) or Noveske Polygonal 1:11 Twist
Carbine Length Gas System with Lo-Profile Gas Block
Threaded Muzzle (5/8 x 24) with Accu-Tac Flash Hider
Wilson Combat T.R.I.M. Rail - 9.3"
Ergo Pistol Grip
Wilson Combat Tactical Triggerguard
Rogers/Wilson Super-Stoc
Wilson Combat TTU (Tactical Trigger Unit) Single Stage, 4#
Premium Mil-Spec Bolt and Bolt Carrier, MP Inspected, NP3 Coated
Mil-Spec Hard Anodize Finish on Upper / Lower Receivers
Armor-Tuff® Finish
20 Round Modified Lancer L5 AWM Magazine
Tactical Hunter Model, 18" or 20"
Forged 7075 Upper (Flat Top) and Lower Receiver
Wilson Combat Tactical Hunter Match Grade Barrel with 6 Groove / 1:12 Twist (Conventional or Polygonal Rifling) or Noveske Polygonal 1:11 Twist
Mid Length Gas System with Lo-Profile Gas Block
18" or 20" with Crowned Muzzle or 18" with Threaded Muzzle (5/8 x 24) with Accu-Tac Flash Hider
Wilson Combat T.R.I.M. Rail - 10.4" on 18" Barrels, 12.6" on 20" Barrels
Ergo Pistol Grip
Wilson Combat Tactical Triggerguard
Rogers/Wilson Super-Stoc
Wilson Combat TTU (Tactical Trigger Unit) Two-Stage, 4#
Premium Mil-Spec Bolt and Bolt Carrier, MP Inspected, NP3 Coated
Mil-Spec Hard Anodize Finish on Upper / Lower Receivers
Armor-Tuff® Finish
20 Round Modified Lancer L5 AWM Magazine
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7.62x40 WT Handload Data
110gr Sierra Hollow Point
21gr Hodgdon H110
Lake City formed case
Remington 7 ˝
2.110” OAL
110gr Barnes TTSX
21gr Hodgdon H110 (16” barrels or shorter)
Lake City formed case
Remington 7 ˝
2.250” OAL
110gr Barnes TTSX
25gr Accurate 1680 (16” barrels or longer)
Lake City formed case
Remington 7 ˝
2.250” OAL
125gr Sierra Pro Hunter
25.5gr Accurate 1680
Lake City formed case
Remington 7 ˝
2.160” OAL
125gr Speer TNT
25.5gr Accurate 1680
Lake City formed case
Remington 7 ˝
2.250” OAL
125gr Nosler Ballistic Hunter
25gr Accurate 1680
Lake City formed case
Remington 7 ˝
2.250” OAL
These loads have proven to be safe in our test guns, but as with all handload data we suggest you start with a 10% reduction in powder charge weight. Wilson Combat assumes no liability for the use or misuse of this information, use at your own risk.
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7.62x40 WT Project Available Products
Barrels
Match Grade Barrel, 7.62x40 WT, SBR Tactical, 11.3", Stainless
Match Grade Barrel, 7.62x40 WT, Recon Tactical, 16", Stainless
Match Grade Barrel, 7.62x40 WT, Recon Tactical, 16", Stainless, Fluted
Match Grade Barrel, 7.62x40 WT, Tactical Hunter, 18", Stainless, Non-Threaded
Match Grade Barrel, 7.62x40 WT, Tactical Hunter, 18", Stainless
Match Grade Barrel, 7.62x40 WT, Tactical Hunter, 20", Stainless, Non-Threaded
Ammunition
7.62x40 WT | 110 gr. Sierra HP, 2425 FPS - 16" Barrel, 20/Box
7.62x40 WT | 110 gr. Barnes TTSX, 2400 FPS - 16" Barrel, 20/Box
7.62x40 WT | 125 gr. Nosler Ballistic Tip, 2350 FPS - 16" Barrel, 20/Box
7.62x40 WT | 125 gr. Sierra Pro-Hunter, 2350 FPS - 16" Barrel, 20/Box
7.62x40 WT | 125 gr. Speer TNT, 2400 FPS - 16" Barrel, 20/Box
Reloading
Hornady Custom Grade New Dimension 2-Die Set, 7.62x40 WT
Cartridge Gauge, 7.62x40 WT
Brass, 7.62x40 WT, Unprimed, 100/Bag
Brass, 7.62x40 WT, Unprimed, Once Fired, 100/Bag
Magazines
AR Style Magazine, 7.62x40 WT, 20 Round, Polymer | Lancer L5 AWM
AR Style Magazine, 7.62x40 WT, 30 Round, Polymer | Lancer L5 AWM
Complete Upper Assemblies
Complete Upper Assembly, 7.62x40 WT, SBR Tactical, 11.3"
Complete Upper Assembly, 7.62x40 WT, Recon Tactical, 16"
Complete Upper Assembly, 7.62x40 WT, Recon Tactical, 16", Fluted
Complete Upper Assembly, 7.62x40 WT, Tactical Hunter, 18"
Complete Upper Assembly, 7.62x40 WT, Tactical Hunter, 18", Non-Threaded
Complete Upper Assembly, 7.62x40 WT, Tactical Hunter, 20"
What are the case dimensions of the 7.62x40 and capacity compared to the 300 Blackout? What pressures are both rounds loaded to? How deeply does the 150 gr bullet intrude into the powder space? Which 150 gr bullet is used, is it a flat base or boat tail? With a twist of 1:11 or 1:12, does that mean this new round intended to run bullets of 150 gr & less? Has the 7.62x40 been submitted to SAAMI? The blurb states that the factory ammo will be fire-formed upon firing to give an additional grain of capacity. Where does the factory case headspace? When fire-formed, what changes? Does the fire-formed case have less body taper and/or steeper shoulder angle?
What has been posted is a lot of advertising hype with very little technical data
I don't think fire forming increases apparent case capacity in any significant way because at the chamber pressures of rifle cartridges, the brass flows to fill the chamber as you shoot it the first time and is not really 'noticed' by the powder. Also why does the brass need to be fire formed anyway compared to, say, 5.56mm? Why would it not match the chamber?
Also, powder burn rate has 95% to do with bullet weight and about 5% to do with barrel length. This is because peak chamber pressure - the limit of how much powder you can use, is reached before the bullet has moved even one inch. So there would be no reason to change from H110 to A1680 when you go from a 16 or under length barrel to an over 16 inch barrel. Whichever powder gives the most velocity in a 10 inch barrel will almost certainly also give the most velocity in a 16 or 20 inch barrel as well.
Just to give an example, I put 7.62x40mm into QuickDesign, and then simulated it in QuickLoad. With a 10 inch barrel and a Nosler 125 loaded to 2.25 OAL, the top powders are (deleting the ones not available in the US) from most to least velocity:
Winchester 296
Hodgdon Lil'Gun
Hodgdon H110
Accurate 5744
Alliant 2400
Ramshot Enforcer
Accurate 1680
Now I change to a 20 inch barrel, and the top powders are:
Winchester 296
Hodgdon Lil'Gun
Hodgdon H110
Accurate 5744
Accurate 1680
Alliant 2400
Ramshot Enforcer
You can see - A1680 moved up two slots so there is some gain, but still did not overtake H110/296. It could be wrong and pressure barrel tests would be definitive, but at least this shows the theory that powder selection does not have much to do with barrel length.
wilsoncombatrep
03-31-11, 18:53
MistWolf,
We try to answer as many questions as we can initially think of on the website. On the barrels pages, you'll note that our 762x40WT barrels are 1/12" twist. While we mention that the round is designed with use with bullets from 11-150 grains in mind, we don't produce any loads with 150gr bullets. Your handloading choice of 150grain bullets would determine how much case capacity the bullet would take up.
I am working on a schematic that I can post to address your cartridge dimension questions. Thanks for the interest!
What are the case dimensions of the 7.62x40 and capacity compared to the 300 Blackout? What pressures are both rounds loaded to? How deeply does the 150 gr bullet intrude into the powder space? Which 150 gr bullet is used, is it a flat base or boat tail? With a twist of 1:11 or 1:12, does that mean this new round intended to run bullets of 150 gr & less? Has the 7.62x40 been submitted to SAAMI? The blurb states that the factory ammo will be fire-formed upon firing to give an additional grain of capacity. Where does the factory case headspace? When fire-formed, what changes? Does the fire-formed case have less body taper and/or steeper shoulder angle?
What has been posted is a lot of advertising hype with very little technical data
Will try to get our reamer print posted on the web site.
Flat base 150gr bullets work best since they take up less powder capacity, but the cartridge really shines with 125gr bullets. It's strictly designed for supersonic use, this is why we only offer 1-10 to 1-12 twist bbls. For reference 125gr Speer TNTs do not waste any powder capacity, the base of the bullet is at the bottom of the neck.
Fireformed cases have less body taper and a steeper angle shoulder. It headspaces on an area of the shoulder that doesn't change, you will just have more shoulder area to headspace on after firing.
We have not decided if we will submit to SAAMI. I have personally shot THOUSANDS of rounds that were loaded hotter than the ammo we sell with no issues.
ShortytheFirefighter
03-31-11, 21:39
So this would require a new barrel and proprietary magazines? Would the modifications made to the Lancer mag be able to be done with other magazines and would it be able to be done by the end user?
"Also, powder burn rate has 95% to do with bullet weight and about 5% to do with barrel length. This is because peak chamber pressure - the limit of how much powder you can use, is reached before the bullet has moved even one inch. So there would be no reason to change from H110 to A1680 when you go from a 16 or under length barrel to an over 16 inch barrel. Whichever powder gives the most velocity in a 10 inch barrel will almost certainly also give the most velocity in a 16 or 20 inch barrel as well. "
The above was posted by RSilvers and may be true in theory or what Quickload lists, but all I can tell you is that in real world application this is what happens............
16" or less bbls: H110 has no muzzle flash and maximum safe velocity is basically the same as A1680, with A1680 in a 11" we get substantial muzzle flash (not good with NV) and no real velocity gain.
In 18" or longer bbls: A1680 gives us maximum velocity at less pressure than H110. With A1680 you can get a SUBSTANTIAL velocity increase with a 20" bbl over a 16" bbl. You simply can't get enough A1680 in the case to create serious pressure signs either.
So this would require a new barrel and proprietary magazines? Would the modifications made to the Lancer mag be able to be done with other magazines and would it be able to be done by the end user?
Yes bbl and mag is all that's required
We have found the new Lancer AWM to be the best mag for this cartridge. We are removing a portion of the front rib, yes it can be done by had with a wood rasp or something similar, however we do a much better job with our CNC machine (-:
What is probably happening is that QuickLoad is incorrect about which powder gives the most velocity. You have found that A1680, in actual testes, gives the most velocity, but has too much flash for short barrels. That makes sense.
What is probably happening is that QuickLoad is incorrect about which powder gives the most velocity. You have found that A1680, in actual testes, gives the most velocity, but has too much flash for short barrels. That makes sense.
A1680 has always given the highest velocity and I have not seen any pressure signs that concern me at all and have never blown a primer........can't say that about H110 when trying to get to top velocity!!!! Just way too much flash and boom in short bbls for me......
hmmmmmmm... mags are not ridiculously priced, barrels are cheap, ammo price isn't bad at all considering it's proprietary. i probably won't be the guinea pig, but i'm definitely interested.
looks very promising, WC.
.750" gas blocks, looks like?
its not a particularly hot load, as far as i know about such things.. any estimates on service life? possible plans for cheaper training ammo? possibility for CMV/CL barrels down the road?
.750" gas blocks, looks like?
its not a particularly hot load, as far as i know about such things.. any estimates on service life? possible plans for cheaper training ammo? possibility for CMV/CL barrels down the road?
Yes, .750" blocks
I have two uppers with 3-5000 rounds through them and they show no abnormal wear and tear even though a lot of the loads fired through them were over max doing load development.
I think we have enough bbl choices already without CL, more bbls choices will be put on the web site later this week. We also have some Noveski's coming in too.
We also have some Noveski's coming in too.
As in Noveske Rifleworks? Are they getting on board with 7.62x40mm WT or just offering barrels at this point?
Thanks.
As in Noveske Rifleworks? Are they getting on board with 7.62x40mm WT or just offering barrels at this point?
Thanks.
They made some of the original barrels for Kurt and they shot really well so we had them make us some more for those Noveski barrel fans. I have no idea if they plan to offer any 7.62x40WT product direct???
Thanks for the info.
Very intrigued by this caliber...looking at alternatives to 6.8 for medium-sized game hunting application out of a 16" or 18" barrel non-suppressed.
In your testing what loads/bullets worked best in the 18"? What is the realistic range on those loads?
Thanks.
Thanks for the info.
Very intrigued by this caliber...looking at alternatives to 6.8 for medium-sized game hunting application out of a 16" or 18" barrel non-suppressed.
In your testing what loads/bullets worked best in the 18"? What is the realistic range on those loads?
Thanks.
Deer: 125gr Sierra PH or 125gr Nosler BT over A1680
Hogs: 125gr Sierra PH or 110gr Barnes TTSX over A1680
The 125gr Sierra PH has become my "go to" bullet. If you can find any you had better buy them, Sierra and all the major component dist are out of stock and the next production run is not scheduled until late June.
I consider this caliber a 250yd one, I rarely shoot past 150yds so works well for me.
Why?
A decent 123 grain 7.62x39 load from Bitterroot Valley Ammunition clocks in at 2483 FPS. That's good for 1683 ft/lbs trumping any of the loads listed below.
Is it an issue of good magazines for 7.62x39? Is it that we just can't admit that the Russkies got it right back in the 40s? :secret:
:confused:
While there are some people who would not use anything Russian, I am not one of those people. 7.62x39mm requires a larger bolt face, which is very prone to breakage. It also has a taper which is not compatible with the straight section of the AR magazine well.
Rsilvers,
Got it, so part of it is cramming a 7.62x39 head onto a bolt with an overall size setup for the smaller head of the 5.56 is the bigger issue. Looking at the head diameters between 6.8 and 7.62x39, it appears that the 7.62 head is .050 larger approximately in diameter, correct? Our most 7.62x39 conversions sbased on simply milling out the head opening on the bolt from a standard 5.56 bolt? Is there no way to make the head larger?
The 6.8 has a larger head than 5.56mm, but at least one test did not show a difference in bolt life.
7.62x39mm is even larger, and I am just not comfortable with it - especially since I made a 7.62x39mm upper and I never had a bolt last more than a few hundred rounds. True - it was a 10 inch barrel, FA, with a suppressor - but in 5.56mm that would still last at least 6000 rounds.
The way to make it larger on an AR is to do what Remington did with the 30 RAR and have a special bolt and special barrel extension.
The curve you see in AK mags is optimal for the 7.62x39mm. Any less of a curve causes buckling and binding.
What are the case dimensions of the 7.62x40 and capacity compared to the 300 Blackout?
It is approximately .200" longer. I trim my BLK brass to 1.355" and my 7.62x40 brass to 1.555". The 7.62x40 also has a bit of the case taper taken out when fireformed (more on this later)
What pressures are both rounds loaded to?
Both can handle the same pressures as the .223 parent brass, which IIRC is 55,000 PSI.
How deeply does the 150 gr bullet intrude into the powder space? Which 150 gr bullet is used, is it a flat base or boat tail?
You could use just about any 150gr bullet, but in the 7.62x40 and the 300 BLK you are beyond the point of diminishing returns IMO. If you do it to make major power factor for competition, that's fine, but most 150gr .308" bullets won't do much at the velocities you can get in these smaller cases. That may change as bullets designed for the 300 BLK start coming out but for now, the bread and butter for supersonics in both will be 110-125gr.
With a twist of 1:11 or 1:12, does that mean this new round intended to run bullets of 150 gr & less?
Yes. From what I've read from the original designer, Kurt, it was intended as an improvement on the 300 Whisper for supersonic use.
Has the 7.62x40 been submitted to SAAMI? The blurb states that the factory ammo will be fire-formed upon firing to give an additional grain of capacity. Where does the factory case headspace? When fire-formed, what changes? Does the fire-formed case have less body taper and/or steeper shoulder angle?
I'm not at home or I'd post a picture of an unfireformed case next to a fireformed case but in short the case taper is straighter in the 7.62x40 and the shoulder angle is different. There isn't much of a shoulder, but I like the sharper shoulder for more positive headspacing so I usually fireform my cases before loading to full potential. It may not be necessary, but I feel better about it.
What has been posted is a lot of advertising hype with very little technical data
Info will come out with time and the right questions. I've been following alot of the threads on the 7.62x40 since I've had one of the early barrels for a while now. Bill and his employees have gone above and beyond providing info and being completely up front about what the cartridge is capable of. I think they are being a bit conservative about velocities, which I'm glad to see. Nothing more frustrating than being told something will perform to a certain spec and then being disappointed when it won't do it.
I'm glad to see it going mainstream since I've been very happy with mine. I'm anxious to get my hands on an 11.3" barrel. My current barrel is in the 16" flavor.
hmmmmmmm... mags are not ridiculously priced, barrels are cheap, ammo price isn't bad at all considering it's proprietary. i probably won't be the guinea pig, but i'm definitely interested.
looks very promising, WC.
You wouldn't be the guinea pig. This has been around since 2008 IIRC. First discussed on Quarterbore and then on AR15.com. I've had mine for a while now and had alot of fun with it. It has some pretty impressive performance in such a small case. It, like the 300 BLK, is very efficient in short barrels due to the small shoulder and near straight wall design. I prefer my AR's with short barrels so I like this cartridge alot. As stated in my last post, I'm very excited to see 11.3" SBR barrels available. I'm just out of spare cash at the moment.
Are other manufactures going to start producing this round?
Are other manufactures going to start producing this round?
According to Wilson it is open for others to produce. That is one of the reasons they are talking about posting the reamer print on this web site. I imagine others picking it up will depend on whether it gains enough popularity to make producing it lucrative for another company.
I certainly hope so.
When will the cheap target ammo be availble?
When will the cheap target ammo be availble?
You mean the military surplus or commie stuff?
Never.
Is ammo availability going to be better than the 300aac? Prices on waht you show online seem to be inline with what you can get Rem corelokt 223 from box stores, 6.8 110gr or 115gr, so its reasonable, but if you can't get it, then its not worth purchasing the hardware. whats the word on that?
wilsoncombatrep
04-08-11, 11:31
Guys,
We have loaded ammo for the 762x40WT on the shelf, and plans to continue to load it as needed. I have no word on any other company(s) that will load it in the future. You can get all you want at...
http://shopwilsoncombat.com/Wilson-Combat-Custom-Rifle-Ammunition/departments/107/
If you want cheap(er) blasting/training ammo for an AR, then 5.56 is the way to go...if you want more punch out of that same AR by simply changing uppers and switching mags, now you have another option;)
dan rockway
04-11-11, 20:48
This might be just ok for small deer. I sure wouldnt go for anything bigger than a blacktail though. Doesnt even have the power of a 30-30
It just depends how good a shot you are.
wilsoncombatrep
04-11-11, 21:11
Dan,
As with all things, placement is key, but projectile technology has come a long way with regards to hunting bullets. The 110gr Barnes TTSX is proving to be very capable on tougher game like wild hogs....
http://www.wilsoncombat.com/images/762x40/bill-wilson-762x40.jpg
Deer: 125gr Sierra PH or 125gr Nosler BT over A1680
Hogs: 125gr Sierra PH or 110gr Barnes TTSX over A1680
The 125gr Sierra PH has become my "go to" bullet. If you can find any you had better buy them, Sierra and all the major component dist are out of stock and the next production run is not scheduled until late June.
I consider this caliber a 250yd one, I rarely shoot past 150yds so works well for me.
Thanks!
Might be a subjective question...since the company name is on one...but given the choice of a 6.8 or 7.62x40 which flavor do you prefer out of a 16" or 18" in supersonic for whitetail/hog?
wilsoncombatrep
04-12-11, 10:41
You're right, subjective:)
The answer is, do you like chocolate or vanilla? Both certainly work, but appeal to different users. The 6.8 certainly gives better ballistics, especially when loaded to its full potential in a Spec2 chamber. But it requires a new bolt, dedicated(purpose built mags) and of course a new barrel. The 762x40WT, does not need a new bolt,(of course it needs a new barrel) and can use non-modified 5.56 mags, and needs 5.56 modifiedmags to reach its full capacity.
For me and my hunting uses, I personally prefer the 6.8, but plan on trying out the 762x40WT more this upcoming hunting season. I know Bill has been very impressed with it capability. The 6.8 has more loaded ammunition options, but the 762x40WT gives the reloader a great opportunity to convert readily available 5.56 brass, something many have bucket loads of laying around.
Pick for yourself....both offer easy alternatives for the 5.56 AR owner to upgrade their platform to a more powerful and capable chambering.
fiddly_foo
04-12-11, 10:58
Hey wilson people I live in CT. and was looking at a complet upper the 16" flutted if I got one would you guys be able to pin a certfied BATFE muzzle break on the barrel for me like the pws fsc30 which would be perfect.. thx's alot guys Damn CT laws...
wilsoncombatrep
04-12-11, 11:40
fiddly,
Give the sales dept a call, and ask for John May. He will sort this out for you. We have some muzzle devices instock, and we can do a custom ordered upper for you with various options.
Done experimenting, have settled on my "go to" loads for anything I plan to shoot with the 7.62x40WT
under 14" bbl
125gr Sierra PH over 21.2gr H110, Rem 7 1/2, 2.150" OAL
Over 14" bbl
125gr Sierra PH over 25gr A1680, Rem 7 1/2, 2.150" OAL
The Sierra is just the consistently most accurate bullet and at 2250-2450 fps MV performs very well on deer and hogs.
Just wish Sierra would hurry up and run some more bullets, I'm nearly out !!! Sierra told me they plan a big run in June, hopefully early June (-:
BoringGuy45
05-02-11, 21:16
This looks like another good dog in the fight. Hope it gets widespread and doesn't just stay a specialty round. From the numbers posted, it sounds like it's got a lot of potential both with hunters and tactical shooters.
With the .300 BLK on the rise, I'd like to see a battle between the two on the market; it can only make them better.
dan rockway
05-02-11, 23:12
Alright gentlemen,
I like all these cartridges. Maybe I just like cartridges! But I do like all this experimentation. You guys are doing great work. I like this 30 cal because it sticks to the original bolt face and that sort of helps keep cost down. But I STILL love these 6.5 rifles just because of the numbers they put out. Unlike my ex wives numbers never lie. So has anybody out there tried the old 6.5 TCU. Back in the day I did a bunch of load dev elopment for this cartridge in a bolt action Remington pistol. It was and XP100 or something like that. Bottom line...It was HOT. It was accurate as hell. We used it on rock chucks by the hundreds but I would have shot any deer with it. Certainly much better than a 223. I know its about shot placement. Afterthat though its about penetration and damage done. Ok guys. What do we think?
Dan,
As with all things, placement is key, but projectile technology has come a long way with regards to hunting bullets. The 110gr Barnes TTSX is proving to be very capable on tougher game like wild hogs....
http://www.wilsoncombat.com/images/762x40/bill-wilson-762x40.jpg
I'm sorry, i cant help but ask....
How many FEET is Mr. Wilson kneeling behind the hog? 3-4ft?
Alright gentlemen,
I like all these cartridges. Maybe I just like cartridges! But I do like all this experimentation. You guys are doing great work. I like this 30 cal because it sticks to the original bolt face and that sort of helps keep cost down. But I STILL love these 6.5 rifles just because of the numbers they put out. Unlike my ex wives numbers never lie. So has anybody out there tried the old 6.5 TCU. Back in the day I did a bunch of load dev elopment for this cartridge in a bolt action Remington pistol. It was and XP100 or something like that. Bottom line...It was HOT. It was accurate as hell. We used it on rock chucks by the hundreds but I would have shot any deer with it. Certainly much better than a 223. I know its about shot placement. Afterthat though its about penetration and damage done. Ok guys. What do we think?
6.5 TCU has been done in the AR but has some load length problems. The 6.5 MPC, done by JD Jones of SSK (same as the original 300 Whisper), has been around a while. It is basically a .223 necked up to .264 and trimmed back. Also, there are a couple guys on AR15.com have a long thread about the 6.5PCC, which is a modified TCU designed for the AR.
This is addressed to the Wilson Combat folks ...
I see that you have some 7.62x40 barrels on sale. I am undecided between the 16 inch match fluted barrel, and the 16 inch lightweight hunter.
I intend to handload for this, and don't want a tight match chamber. Are the chambers different on these barrels?
wilsoncombatrep
05-05-11, 23:26
The chambers are the same on all of our 762x40WT barrels.
I've been doing some testing on .224" bullets using water jugs and have learned some important information so I decided to try a couple from my 7.62x40. I've had the 110gr TSX and the 110gr TSX-SBR for a while and wanted to see what they would do. Barnes told me that the upper velocity limit on the SBR version (which was designed with the 300BLK in mind) was around 2300fps. I get 2500fps from these bullets in my 16" 7.62x40 so I figured I would just hold on to them for use in my 300BLK or my 7.62x40 SBR (when I get it), but I decided to test it from the 16" today just for fun.
Here's what I found. Both bullets had an impact velocity of approximately 2470fps (10 yards from the muzzle). The standard 110gr TSX mushroomed perfectly, as I've come to expect from the TSX line of bullets, and completely penetrated 4 jugs of water, coming to rest in the 5th. It had 100% weight retention and expanded to 0.641".
Next up was the 110gr TSX-SBR. After having quite a few of the .224" TSX's lose their petals if driven to velocities above what Barnes recommends, I expected the SBR bullet to do the same at this impact velocity, however, it did not. It also exhibited a perfect mushroom, but it expanded further down the shank of the bullet. It penetrated 3 jugs completely, and stopped in the 4th, which suggests it opened earlier and lost more energy but had a shorter neck length than the standard TSX. It retained 100% of its weight and expanded to 0.656".
Also of note was that the standard bullet penetrated similarly to a 62gr TSX from a 5.56 rifle and the SBR bullet penetrated similarly to a 62gr Bonded Federal .223 round so penetration should be about right for hunting and defense. I know milk jugs are not hogs or humans, but the bullets both held up well (surprising so for the SBR bullet), and penetrated well.
Since the SBR bullet held together so well, I'm thinking it may be about perfect for the 7.62x40 as it would increase the effective range considerably. The standard TSX is supposed to expand to 1800fps (220 yards with a MV of 2500) and the SBR bullet is supposed to expand down to 1500fps (330 yards with a MV of 2500). These may be worth looking at.
Just for comparison I also shot a 110gr V-Max into jugs. It completely penetrated 2 jugs leaving fragments in the first two and the jacket and core stopped in jug 3. It only retained 38.3gr (34.8%) and the core expanded to 0.579".
Here are some pics:
Standard TSX on the left, TSX-SBR on the right
http://i710.photobucket.com/albums/ww103/aplorton/110grVMAX1.jpg
http://i710.photobucket.com/albums/ww103/aplorton/110grTSX1.jpg
The V-Max
http://i710.photobucket.com/albums/ww103/aplorton/110grTSX2.jpg
piperpilot3tk
06-15-11, 17:12
The bullet you are referring to is called the TAC-X. I have loaded the 62 grainers and shot stacks of wet phone books at 100 yards with my M4. These bullets rock, they penetrated four phone books and continued to penetrate two and a half feet of wet dirt, they expanded to approx. .485" and had zero petal separation or weight loss, I also shot M855 at same set up and they were recovered intact yet badly deformed in the third phone book. I will be loading some of the .30 cal bullets for my 300 BLK SBR!
The bullet you are referring to is called the TAC-X. I have loaded the 62 grainers and shot stacks of wet phone books at 100 yards with my M4. These bullets rock, they penetrated four phone books and continued to penetrate two and a half feet of wet dirt, they expanded to approx. .485" and had zero petal separation or weight loss, I also shot M855 at same set up and they were recovered intact yet badly deformed in the third phone book. I will be loading some of the .30 cal bullets for my 300 BLK SBR!
According to Barnes the Tac-X and the TSX are identical (provided you are talking about the same caliber and weight). Barnes sells a 110gr TSX, a 110gr Tac-X, and a 110gr Tac-X SBR. The first two are the same but sold under two different names to appeal to two different markets. If you want them for a 300BLK (especially an SBR) make sure to get the SBR version, they are designed to work at a much lower velocity window.
The SBR is called SBR because it is designed for 308 SBRs. There was just not much demand for it until 300 AAC BLACKOUT came out - so that is when they released it.
If you are shooting under about 2600 fps, or want to shoot at longer ranges, I would select it over the normal one.
so has there been any more work on the 762x40 as I have more than a passing interest in these weapons they seem to be an almost perfect combination of parts for a light heavy hitter
so has there been any more work on the 762x40 as I have more than a passing interest in these weapons they seem to be an almost perfect combination of parts for a light heavy hitter
Biggest news is the new bullet Barnes designed specifically for the 7.62x40WT, it's designed to reliably expand down to 1300fps impact velocity with optimal expansion in the 2100-2400fps (impact) range. Accuracy is very good and so far the 9 hogs we have shot with the bullet were VERY impressed............... This bullet definately increases the effectivness of the round on bigger/tougher game.
Barnes #30801
110gr TTSX LV (low velocity)
Available exclusively from Wilson Combat until after the SHOT show 2012
constructor
11-17-11, 18:38
Thanks for working with Barnes to bring the new 30cal and 6.8mm bullets to market Bill. IMO proper expansion can make a huge difference in terminal performance and using 308 win projectiles at slower speeds does not always work so well.
Thanks for working with Barnes to bring the new 30cal and 6.8mm bullets to market Bill. IMO proper expansion can make a huge difference in terminal performance and using 308 win projectiles at slower speeds does not always work so well.
New bullet is working AWESOME on hogs and deer, terminal performance is fantastic out of my 11.3" SBRs, can only get better out of a 16" tube !!!!!
Am I correct in understanding that this is Kurt's cartridge (http://www.ar15.com/forums/t_3_121/382761_7_62x40mm_Information_Thread.html) made mainstream? I haven't read that topic since it was less than half its current size; if so, I'm surprised that he's not mentioned at all on Wilson's site.
-B
Am I correct in understanding that this is Kurt's cartridge (http://www.ar15.com/forums/t_3_121/382761_7_62x40mm_Information_Thread.html) made mainstream? I haven't read that topic since it was less than half its current size; if so, I'm surprised that he's not mentioned at all on Wilson's site.
-B
Copied from our 7.62x40WT mainpage: "Wilson Combat would like to express our gratitude to Kurt Buchert for all his early development work on this cartridge."
Reading comprehension fail on my part. Thanks for pointing that out. :o
-B
Biggest news is the new bullet Barnes designed specifically for the 7.62x40WT, it's designed to reliably expand down to 1300fps impact velocity with optimal expansion in the 2100-2400fps (impact) range. Accuracy is very good and so far the 9 hogs we have shot with the bullet were VERY impressed............... This bullet definately increases the effectivness of the round on bigger/tougher game.
Barnes #30801
110gr TTSX LV (low velocity)
Available exclusively from Wilson Combat until after the SHOT show 2012
this bullet makes me happy. gives me a reason to want a .30 AR now :)
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