Short Barrel Rifle Ammo

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Does anyone make Ammo specifically for SBR applications? In the 7-11 inch 5.56 or 11-12 .308?

[Sigfan26]

http://www.hornadyle.com/products/ri.../75-gr-tap-sbr

[Clusterfrack]

I like TAP SBR a lot. Noticeable reduction in blast. Works well for me suppressed or unsuppressed.

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I like TAP SBR a lot. Noticeable reduction in blast. Works well for me suppressed or unsuppressed.

What about flash? Have you had a chance to night shoot it?

[NH Shooter]

In .223, this round is excellent - http://palmettostatearmory.com/speer...rds-24475.html

Shoots extremely well out of my 16" and 11.5" BCMs.

[Clusterfrack]

What about flash? Have you had a chance to night shoot it?

Dusk, not full dark. Seemed lower flash from an 11.5" upper.

[Sensei]

I like TAP SBR a lot. Noticeable reduction in blast. Works well for me suppressed or unsuppressed.

I agree that the Hornady 75 grain TAP SBR is softer shooting and suppresses better than most 5.56 loads, but take a look at these chrono numbers that I made:

All data points are 5-round averages +/- STD fired at 81F and 30 mmHg BP.

1) Hornady 5.56 TAP SBR 75 grain from 10.5" LMT MRP (1:7): 2169 +/- 7 fps.

2) Hornady TAP T2 from 10.5" LMT MRP (1:7): 2423 +/- 19 fps.

That is a 250 fps spread between 2 loads with identical mass from the same manufacturer. My BH 77 grain OTM and RA556B also run 250-300 fps faster from a 10.5" barrel than the Hornady SBR load.

Now, I subscribe to the philosophy of bullet construction trumps velocity, to a point. But this Hornady load makes me think that RA556B is not THAT much louder or brighter. In fact, I bet RA556B and 77 grain OTMs would probably equal the Hornady SBR load in terms of recoil and flash if Winchester or BH lightened their loads down to .223 velocities which is basically what you are getting with the TAP SBR.

[Clusterfrack]

Very interesting. Thanks for posting that.

[voodoo_man]

For people? 77gr OTM.

Really nothing else I want to use, unless I can find that unobtainium 70gr tsx

[Sigfan26]

For people? 77gr OTM.

Really nothing else I want to use, unless I can find that unobtainium 70gr tsx

Have you shot any of the Black Hills 70gr GMX?


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