Page 1 of 2 12 LastLast
Results 1 to 20 of 33

Thread: Sneak Preview: Hornady 75 grain 5.56 NATO Superformance

  1. #1
    Join Date
    Nov 2008
    Posts
    737
    Feedback Score
    0

    Sneak Preview: Hornady 75 grain 5.56 NATO Superformance

    Sneak Preview

    Hornady 75 grain 5.56 NATO Superformance





    Hornady’s newest line of ammunition in 223 Remington/5.56mm NATO, “Superformance”, is now shipping. Of particular interest to AR-15 shooters is their 75 grain 5.56 NATO Superformance load. Hornady claims a velocity of 2920 fps for this load from a "20 inch NATO-spec test barrel."



    From Hornady's website.



    The 5.56 NATO Superformance load is topped with the “T1” 75 grain BTHP projectile. There is a slight taper crimp at the case mouth and no case-mouth sealant.













    Naturally this load is charged with one of the new, “highly progressive” Superformance powders. According to Hornady, the Superformance propellants “provide a longer duration/application of peak pressure in the pressure time curve that occurs within the barrel. In other words, both Superformance and standard propellants provide an equally powerful 'push' applied to the base of the bullet, but with Superformance propellants, the 'push' is applied for a longer period of time.”




    From Hornady’s website.



    The lot of 5.56 NATO Superformance ammunition that I evaluated is loaded in Lake City 09 brass. The primer pockets are crimped and sealed.


    Chronographing of the 75 grain 5.56 NATO Superformance ammunition was conducted using an Oehler 35-P chronograph with “proof screen” technology. All velocities listed below are muzzle velocities as calculated from the instrumental velocities using Oehler’s Ballistic Explorer software program. All strings of fire consisted of 10 rounds each. Data was obtained from a Colt 20” M16A2 barrel.











    Each round was single-loaded and cycled into the chamber from a magazine fitted with a single-load follower. The bolt locked-back after each shot allowing the chamber to cool in between each shot. This technique was used to mitigate the possible influence of “chamber-soak” on velocity data. Each new shot was fired in a consistent manner after hitting the bolt release. Atmospheric conditions were monitored and recorded using a Kestrel 4000 Pocket Weather Tracker.





    Atmospheric conditions:

    Temperature: 58 degrees F.
    Humidity: 32%
    Barometric pressure: 29.65 inches of Hg
    Elevation: 950 feet above sea level


    For comparison, I fired the Superformance load back-to-back with Hornady’s 75 grain 5.56 NATO TAP T2 and 75 grain 223 Remington TAP FPD. The chronograph data is shown in the table below.










    There were no manifest over-pressure signs on the case-heads of the fired Superformance rounds.









    An accuracy Snapshot of the 5.56 NATO Superformance load was obtained from a distance of 100 yards shooting from my bench-rest set-up. The test vehicle was a chrome-lined, NATO chambered 20” Colt HBAR with a 1:7” twist. The barrel was free-floated. The free-float handguard of the rifle rested in a Sinclair Windage Benchrest, while the stock of the rifle rested in a Protektor bunny-ear rear bag. Sighting was accomplished via a Leupold VARI-X III set at 25X magnification and adjusted to be parallax-free at 100 yards. A mirage shade was attached to the objective-bell of the scope. Wind conditions on the shooting range were continuously monitored using a Wind Probe.





    A quick 10-shot control group fired from the above set-up using match-grade hand-loads had an extreme spread of 1.2”.





    The 10-shot group of the 75 grain 5.56 NATO Superformance load had an extreme spread of 3.4” and a mean radius of 1.16”.






    For the Internet Commandos in our viewing audience tonight, here’s a pic of a cherry picked, 3-shot group of the 5.56 NATO Superformance load. The group has an extreme spread of 1.263”.





    For comparison, I also fired a 10-shot group of Hornady’s new .223 Remington 53 grain Superformance load. This load uses a brand new bullet from Hornady, the 53 grain V-MAX. The ogive of the bullet is tailored for .223 Remington chambers. This load produced a sizzling muzzle velocity of 3285 fps when chronographed from a 20” Colt M16A2 barrel.





    The 53 grain V-MAX is shown on the left compared to a 52 grain A-MAX on the right.




    The 10-shot group of the 53 grain Superforance load had an extreme spread of 1.213” with a mean radius of 0.458”. It will be interesting to see how this load performs out of my .223 Remington chambered Krieger barreled AR-15.








    To be continued . . .
    Last edited by Molon; 11-06-10 at 12:08.
    Member of the General Population

  2. #2
    Join Date
    Nov 2008
    Location
    OR
    Posts
    158
    Feedback Score
    0
    Looks great, interesting results. I look forward to seeing how it prints on paper.

  3. #3
    Join Date
    Nov 2007
    Location
    US
    Posts
    2,684
    Feedback Score
    6 (100%)
    Glad to see it. I just wish that the T2 TAP was easier to get a hold of. Hopefully I will be able to find this easier
    "Intelligence is not the ability to regurgitate information. It is the ability to make sound decisions on a consistent basis "--me

    "Just remember, when you are talking to the average person, you are talking to a television set"--RDJB

    One Big Ass Mistake America

  4. #4
    Join Date
    Mar 2009
    Location
    Deep South Texas
    Posts
    1,636
    Feedback Score
    2 (100%)
    Thanks for your time on this...i value your posts.
    "You cannot invade the mainland United States. There would be a rifle behind each blade of grass."
    Japanese Admiral Yamamoto, 1941




    "A wise man's heart directs him toward the right, but a foolish man's heart directs him toward the left."
    Ecclesiastes 10:2:

  5. #5
    Join Date
    Mar 2008
    Location
    Kennett Square Pa
    Posts
    2,949
    Feedback Score
    13 (100%)
    Looking forward to following your input. Oddly enough I will be trying out some Superformance 150gr .308 and comparing it to 175gr GMM in a couple hours...

  6. #6
    Join Date
    Jun 2006
    Location
    GA
    Posts
    2,882
    Feedback Score
    35 (100%)
    I hope you get to test this in your Kreiger barrelled upper. I tried it out in my SR15 and it was over 2" at 80 yards. Belmont had even worse results. Then again, it is a very hot load. Looking forward to your results Molon.

    Sent from my Droid using Tapatalk

  7. #7
    Join Date
    May 2008
    Location
    Colorado
    Posts
    5,480
    Feedback Score
    0
    Does it have to have a rifle length gas system or an adjustable system like the .308 ammo? I tried some of the 178gr in my LMT MWS with the 16 inch chrome barrel and a PRS stock with rifle spring and buffer and I popped two out of 16 primers. No mention on the box, but their website suggests an adjustable gas system for the carbine length gas systems.
    Seals lay around on the beach and eat fish. SEALs go to nice locations at all hours and burn shit down. - IraqGunz

    We guard our money with well armed men and our children with "gun free zone" signs. That's the priorities of the damned.- WillBrink

    If Obama had a city......it would look just like Detroit. -Jaxman7

  8. #8
    Join Date
    Sep 2007
    Posts
    915
    Feedback Score
    14 (100%)
    Interesting, I wonder if this could be a good alternative to the virtually non-existent 5.56 T2 ammo.

  9. #9
    Join Date
    Nov 2007
    Posts
    10,678
    Feedback Score
    41 (98%)
    Quote Originally Posted by FromMyColdDeadHand View Post
    Does it have to have a rifle length gas system or an adjustable system like the .308 ammo? I tried some of the 178gr in my LMT MWS with the 16 inch chrome barrel and a PRS stock with rifle spring and buffer and I popped two out of 16 primers. No mention on the box, but their website suggests an adjustable gas system for the carbine length gas systems.



    I had the same thing with my EMC, and Jason Hornady contacted me. They just started staking all 308 SuperPerformance rounds in Sep so until that old stock is depleted you may get an older lot that is not staked, and may pop primers.

    I shot 40 rounds yesterday of the new SP 308 ammo that is staked, and had much better accuracy with no popped primers.

    Interested to see how Molon does accuracy wise because I can't get a group smaller than 3" with the 5.56 SP rounds. Maybe my barrel just doesn't like it...it shoots other Hornady ammo with the T1 bullet into 10 shot 1.5" groups or less usually as long as I don't f-k the group up (usually do ).

  10. #10
    Join Date
    Jun 2006
    Location
    GA
    Posts
    2,882
    Feedback Score
    35 (100%)
    I had no signs of overpressure with the 5.56 SP ammo in my SR15.

    Sent from my Droid using Tapatalk

  11. #11
    Join Date
    Nov 2008
    Posts
    737
    Feedback Score
    0
    Accuracy Snapshots added to first post.
    Member of the General Population

  12. #12
    Join Date
    May 2008
    Location
    Colorado
    Posts
    5,480
    Feedback Score
    0
    Molon,

    Is the chrome lined barrel used in this test since you see that the round will most often be used in that type of rifle? Chrome-lined or SS barrel- it doesn't look like this a super consistent round, as compared to other heavy loadings? Does it have a marked advantage in frag distance compared to .223 75/77 loadings, or even MK262?

    Thanks for the work.
    Seals lay around on the beach and eat fish. SEALs go to nice locations at all hours and burn shit down. - IraqGunz

    We guard our money with well armed men and our children with "gun free zone" signs. That's the priorities of the damned.- WillBrink

    If Obama had a city......it would look just like Detroit. -Jaxman7

  13. #13
    Join Date
    Nov 2008
    Posts
    737
    Feedback Score
    0
    Quote Originally Posted by FromMyColdDeadHand View Post
    Molon,

    Is the chrome lined barrel used in this test since you see that the round will most often be used in that type of rifle?
    Yes, but more importantly than that, a NATO chamber, since this is a hot NATO pressure load. You don’t see too many SS barrels with a true NATO chamber.



    Quote Originally Posted by FromMyColdDeadHand View Post
    Molon,

    Does it have a marked advantage in frag distance compared to .223 75/77 loadings, or even MK262?

    Based on the muzzle velocities given in the first post of this thread from the 20" Colt M16A2 barrel, conservative reliable fragmentation thresholds for the three loads chronographed would be approximately:

    190 yards for 223 TAP FPD
    245 yards for 5.56 TAP T2
    270 yards for 5.56 Superformance.


    I personally have no use for MK262. It’s terminal ballistic properties are inferior to that of loads that use the Hornady 75 grain BTHP or Nosler 77 grain CC BTHP and if accuracy is the primary concern, there are a variety of .223 loads that are more accurate than MK262.


    .....
    Last edited by Molon; 10-31-10 at 22:24.
    Member of the General Population

  14. #14
    Join Date
    Nov 2007
    Posts
    10,678
    Feedback Score
    41 (98%)
    Well glad to see I wasn't the only one with poor accuracy with the 75GR 5.56 SP load....



    ETA: Well not glad with the poor accuracy but Id been accused of being a "flincher" per off site comms so in that regard Im glad Im not the only one, and several other people have reported poor accuracy, too.
    Last edited by Belmont31R; 11-01-10 at 01:19.

  15. #15
    Join Date
    Oct 2008
    Posts
    3,416
    Feedback Score
    0
    Quote Originally Posted by vicious_cb View Post
    Interesting, I wonder if this could be a good alternative to the virtually non-existent 5.56 T2 ammo.
    These accuracy results, and the experience of other forum members, would suggest the these SP loadings are a poor substitute for TAP T2. the main reason is the poor accuracy results, but the lack of cannelure and case mouth sealant are other deficiencies. With accuracy being this poor, the extended fragmentation threshold is meaningless.

    There is only one 75+ grain, NATO spec, OTM offering that is easily found on the civilian market: SSA 77 grain Sierra OTM. This load was a little less accurate than TAP T2, but only by a slight margin (shoots about 1 MOA in my SPR build). I do not believe that it has a case sealant like the T2, but I've learned to live with this. I heard rumors that SSA had improved on this load in the past few months, and I seem to be getting better accuracy results from my last two orders.

  16. #16
    Join Date
    Jun 2006
    Location
    GA
    Posts
    2,882
    Feedback Score
    35 (100%)
    Quote Originally Posted by Belmont31R View Post
    Well glad to see I wasn't the only one with poor accuracy with the 75GR 5.56 SP load....



    ETA: Well not glad with the poor accuracy but Id been accused of being a "flincher" per off site comms so in that regard Im glad Im not the only one, and several other people have reported poor accuracy, too.
    "Flincher".... Seriously?



    Sent from my Droid using Tapatalk

  17. #17
    Join Date
    Nov 2007
    Posts
    10,678
    Feedback Score
    41 (98%)
    Quote Originally Posted by lanesmith View Post
    These accuracy results, and the experience of other forum members, would suggest the these SP loadings are a poor substitute for TAP T2. the main reason is the poor accuracy results, but the lack of cannelure and case mouth sealant are other deficiencies. With accuracy being this poor, the extended fragmentation threshold is meaningless.

    There is only one 75+ grain, NATO spec, OTM offering that is easily found on the civilian market: SSA 77 grain Sierra OTM. This load was a little less accurate than TAP T2, but only by a slight margin (shoots about 1 MOA in my SPR build). I do not believe that it has a case sealant like the T2, but I've learned to live with this. I heard rumors that SSA had improved on this load in the past few months, and I seem to be getting better accuracy results from my last two orders.


    The T2 is a good round but too hard to get regularly.

  18. #18
    Join Date
    Aug 2009
    Location
    Upstate SC
    Posts
    1,306
    Feedback Score
    35 (100%)
    Molon:

    I started a thread in this section about the PPU 75gr BTHP Match and you responded with some good info. and I appreciate that. I've also read this thread and the one posted by Belmont31R with alot of interest.

    In comparing the PPU to the Hornady TAP T2 or SP this is what I'm still left pondering.

    The PPU is approx. 250 fps slower than the T2 and 350 fps slower than the SP. Does the PPU have an acceptable frag distance @ 2,550 fps?

    The TAP T2 has a cannelured bullet. The PPU and SP does not but has a slight taper crimp. Is there a danger of bullet setback in using the PPU or SP in a semi-auto? What's the risk here? From what I've read on here, there appears to be some differences of opinion on this. I'd like to hear your opinion on this.

    It's obvious that the PPU is more accurate than the SP and half the cost of both the SP and the T2.

    Should a bullet cannelure and approx. 300 fps dissuade me from considering this PPU for defensive purposes?

    Scoby

  19. #19
    Join Date
    Jan 2009
    Posts
    92
    Feedback Score
    0
    How does the same company that produces great ammo like 8126N T2 75gr 5.56mm TAP also make turds like this 5.56 SP 75gr, critical defense, and XTP?

  20. #20
    Join Date
    Nov 2008
    Posts
    737
    Feedback Score
    0
    Quote Originally Posted by Scoby View Post
    Molon:

    Does the PPU have an acceptable frag distance @ 2,550 fps?
    The fragmentation threshold of 2250 fps is for the Hornady projectile only. I'm not aware of a reliable figure that has been published for the PPU projectile.
    Member of the General Population

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •