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Thread: 30 HRT

  1. #1
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    30 HRT

    Anyone over here have one?? Ben thinking about having a barrel made.

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    Quote Originally Posted by greenhornet-1 View Post
    Anyone over here have one?? Ben thinking about having a barrel made.
    I too was considering having a barrel made in 30 HRT caliber...

    It's a fine wildcat, however, It doesn't provide a substantial
    Improvement over the x39mm...with new commercial steel
    cased ammo in bulk so cheap, as well as bulk brass cased
    ammo at $7-$10 per box in bulk, I figured building a x39mm
    upper was going to be much more cost effective.

    A quality chambered barrel blank is going to cost you at least
    $300, and then send it to G'smith to have it threaded, fitted,
    crowned etc. is going to be in the $150-$200 range.

    A decent quality complete upper/kit in x39 cal. can had for $450-$500 delivered.

    So it really depends how much you want the 30HRT wildcat, and
    are you willing to spend the cash & time needed etc.

    Good Luck.

  3. #3
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    Your right, After more research it's pretty involved getting one up and running. I like the 30 RAR but i don't know what remington is planning to do with it. They can't seem to get there act together on anything.

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    Quote Originally Posted by greenhornet-1 View Post
    Your right, After more research it's pretty involved getting one up and running. I like the 30 RAR but i don't know what remington is planning to do with it. They can't seem to get there act together on anything.

    The 30 RAR is another great round, but as usual Remington has
    dropped the ball once again...They have yet to properly market the
    round and more Importantly have failed to offer any brass to
    reloaders/hunters/target shooters etc.

    I would love to use the 30 RAR case as a basis for a .264/6.5mm
    wildcat version for the AR-15 platform...but alas, without good
    and reliable souces of brass it's a dead horse at this point.

    It has real potential @ 44 grains of H2O and would make a great
    overall round and a greater wildcat round in 6mm, 6.5mm & 7mm !
    Last edited by Dr69er; 04-19-12 at 18:47.

  5. #5
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    Yep, A 6.5 would be awesome!!! I think i'm going to build an Encore barrel in 30 RAR. I have a 30 cal Green Mountain blank that is just sitting there doing nothing. 4D has the reamer for rent for 30.00. HUMMM
    Last edited by greenhornet-1; 04-19-12 at 22:39.

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    Here is the first thing that came up when I googled 30HRT.

    http://www.ar15.com/content/page.html?id=647

    Definitely like the idea of this round.
    Last edited by doubleajaybrock; 04-26-12 at 17:44.

  7. #7
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    Before you guys build your 30 HRTs, you might want to read Doc's post here.

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    I must be missing something.... How is 30HRT even a consideration in ANYONE'S mind given that 300blk and 7.62x40WT exist and even 6.8?

    30HRT
    * no standard for pressure, loads, gas system, etc (complete wildcat)
    * won't work in 223 magazines
    * doesn't use a 223 bolt
    * doesn't outperform 300blk/WT/6.8/6.5 to any great measurement
    * more rare and more expensive
    * no factory ammo or support
    * tiny niche aftermarket support

    Seems like an absolute non-starter... What am I missing about this?

  9. #9
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    Quote Originally Posted by Noodles View Post
    I must be missing something.... How is 30HRT even a consideration in ANYONE'S mind given that 300blk and 7.62x40WT exist and even 6.8?

    30HRT
    * no standard for pressure, loads, gas system, etc (complete wildcat)
    * won't work in 223 magazines
    * doesn't use a 223 bolt
    * doesn't outperform 300blk/WT/6.8/6.5 to any great measurement
    * more rare and more expensive
    * no factory ammo or support
    * tiny niche aftermarket support

    Seems like an absolute non-starter... What am I missing about this?
    Pressure would be same as the 6.8.
    Any gas system would work just like a 5.56, car, mid or rifle
    uses 6.8 mags and bolts, never seen the big deal with using 556 bolts
    It IS faster than a 300 BLK/or whisper by over 200fps with the same weight bullets.
    Reloading would be apx the same cost as the 6.8 unless using fmj 30 cals then it would cost less.
    Some just want a 30 cal, look at the 300BLK/whisper
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  10. #10
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    I still like the idea of this round. I allready have 30 herret dies and lots of 6.8 brass. I have no reason to shoot subsonic and it would be a hunting round only, and i found a guy in SC that has a reamer and gauges to set it up. Send him a barrel blank and extension and he will turn, thread and chamber it for you.

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    I've got one with a 20" barrel made by Teppo Jutsu. I had it built specifically for hunting. I like the cartridge a lot, and it'll do 2550fps with 125gr and 2350fps with 150gr bullets easily. I'm sure if you spent some time with quickload and a handful of powders you could best that even more. Those numbers are exactly what you would get out of a factory 30-30, which is a little behind what you can get out of the .30RAR. For something that is a low volume of fire hunting rig I don't care that it takes a bit to load ammo. I haven't played with it for a couple years due to multiple moves for work.....I think I have finally fixed that and hope to get it back out this summer and fully ready for deer hunting in the fall. I am planning to cut the barrel back to 18" and have ADCO ball dimple the barrel to get the balance more to my liking for my "brush gun". Forming brass isn't always as simple as people say. The SSA brass that I have needs to have the necks outside turned or you get a .013" donut that form at the base of the neck causing pressure spikes. Remy and Hornady brass have had no such complaints to my knowledge and are usually a 1-pass and trim to length. In general 150gr boattails are too long to be loaded to mag length, but most flat base are good to go. that means you won't be able to load cheap surplus fmj to cannelure or to full speed if you seat them deeper. I really like the 125gr Sierra pro-hunter in this and want to try some of the 110gr and 130gr Barnes TSX. Like I said earlier I really like mine and can't wait to get it into the woods....but it is a complete wildcat that may have some quirks you'll need to iron out.

    advntrjnky

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    According to the information at the link provided, from a 16" barrel the performance of the HRT is rather close to that of the 300BLK
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    depends what you call close. the 30HRT can best the 300blk by 200fps in most usable supersonic bullet weights......but the 30 hrt is still a complete wildcat and the blackout is a SAAMI commercial cartridge. the performance of the 30hrt is equal to the factory 30-30win, and the 300blk is equal to the Russian 7.62x39. Are they close? yes. Are they identical? No. The 30hrt fit my want for a compact 30cal semi-auto brush gun for hunting whitetail deer that made power similar to the 30-30win. IMHO the 300whisper, 300blk, .300fireball. .30/.221, 7.62x40, 7.62x39, 30RAR and 30hrt would have all done the job just as well. I chose the 30hrt and I like the performance it gives in the size/weight/ balance rifle it is chambered in.

    advntrjnky

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    Quote Originally Posted by MistWolf View Post
    According to the information at the link provided, from a 16" barrel the performance of the HRT is rather close to that of the 300BLK

    The HRT will push a 130gr to over 2550 from a 16" barrel, the BLK doesn't come "close" to that.
    In the fall there will be more 30 Herrett-AR barrels on the market, we'll see what a 5R 11 twist can do.
    Last edited by constructor; 05-21-12 at 18:45.
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  15. #15
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    From the linked site-

    What type of velocity can I expect?
    Velocity will vary from rifle to rifle and obviously also depend on the bullet that is being loaded. Some of the velocities recorded from a 16 barreled upper are as follows:

    110 grain bullet about 2500 fps
    125 grain bullet about 2200 fps
    168 grain bullet about 1800 fps
    240 grain bullet about 1000 fps
    That's pretty close to 300 BLK velocities
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    From the linked site-

    What type of velocity can I expect?
    Velocity will vary from rifle to rifle and obviously also depend on the bullet that is being loaded. Some of the velocities recorded from a 16 barreled upper are as follows:

    110 grain bullet about 2500 fps
    125 grain bullet about 2200 fps
    168 grain bullet about 1800 fps
    240 grain bullet about 1000 fps
    That's pretty close to 300 BLK velocities.

    Maybe the HRT does better with longer barrels than the BLK?
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    Below is a graph showing energy versus distance out to 500 yards for select rounds of 30 HRT, 6.8, 30-30, 300 BLK and 223 for comparison. I just picked a few rounds that had readily available data and did not intend to pick the best or worst for each caliber. The MV and BC data were from various manufacturer's websites except for the .223 where I'm using actual chrono results. The data were generated by JMB ballistics software using default temp, pressure, and elevation. I set the chrono to 5'. If anyone has data to refute the info below, please post and I'll update the chart.

    I was rather surprised by the performance of the 30HRT out to 150+ yards. After that the difference betweent the HRT and 6.8 diminishes with the 6.8 having the advantage at longer ranges. For me, the difference isn't worth the hassle of reloading and fireforming brass, but it may be for others.


    Energy in ft lbs. and distance in yards

    The MVs and BC data I'm using for inputs are as follows:

    30 HRT 125 gr Spitzer: 2500 fps; BC .279
    30 HRT 150 gr Spitzer: 2350 fps; BC .336
    6.8 SPC 120 gr SST: 2460 fps; BC .400 (considered "generous" by many)
    6.8 SPC 110 gr Nosler Accubond: 2550 fps; BC .370
    300 BLK 110 gr V-MAX: 2300 fps; BC 0.290
    300 BLK 130 gr Barnes TTS: 2200 fps; BC 0.350
    30-30 Win 150 gr RN: 2390 fps; BC .186
    223/5.56 77 gr SMK: 2640 fps; BC .362

  18. #18
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    You don't fireform 30HRT brass.
    Trim the 6.8 case and run it in a 30 Herrett die...done
    NAFTA and greed is killing this country. Support America, buy American and put Americans back to work
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  19. #19
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    Quote Originally Posted by constructor View Post
    You don't fireform 30HRT brass.
    Trim the 6.8 case and run it in a 30 Herrett die...done
    Fair enough. I was using the info provided in the prior link:

    "Making 30HRT cases (by Krochus)
    Case forming is a pretty straightforward process. Lots of lube and if available the use of a form/trim die can greatly simplify things.

    For me the case forming process takes a few distinct steps:

    • Run a NEW (used cases have a very high failure rate due to neck cracking on initial fireform) 6.8spc case into the form/trim die and cut off the excess with a hacksaw and them chamfer
    • Size this partially formed case in your 30Herrett die
    • Finish trim to 1.695" (I prefer to trim shorter)
    • You might get by without this step with new cases but I prefer to anneal before loading
    • Load and fireform using a mid to full powered loading"

  20. #20
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    Quote Originally Posted by constructor View Post
    You don't fireform 30HRT brass.
    Trim the 6.8 case and run it in a 30 Herrett die...done

    Constructor is correct, the .30 HRT is/can be a straight-up direct
    neck-up process from virigin 6.8mm SPC brass...Just go easy and
    make sure there is engough case lube in all the needed areas of the
    case, esspecially in the case neck.

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