What we're looking for is user info on their AR model, barrel, barrel twist and the best ammo accuracy wise for that setup. If you have a problem with a certain ammo you can add that but please no rants in this particular thread.



TS

POF 1:8 twist 16" barrel - Prvi Partisan 55gr M193- sub-MOA

DPMS M4 CMMG M4A1 barrel- Remington/UMC 55gr- MOA, 55gr TAP FPD MOA



TS

DPMS 24" bull barrel 1 in 8 twist, dpms lower with Jewell trigger, 75 gr. hornady TAP, three rounds into 1/4 inch every time @ 100 yrds (if I do my part)

Cool, anyone have the foggiest what powder and amount (grains) the TAP ammo uses?

Thanks,

Tj

As to the powder it's probably another "secret" blend for Hornady alone.

I have an AR-15 Bushmaster, 24", 1:9 twist and I would like some info (or guidelines) on a start point for powder wt. and bullet wt. for reloading ammo. The powders I have are Varget, IMR 4064, and IMR 4320. I have 60gr, 55gr, and 40gr bullets.

Thanks so much,

Ron

stag lefty m4. 1:9 twist 55 gr fed xm193 sub moa

This post has been edited by grayghost1785: May 11th 2009 2:52 PM

Colt Commando 11.5 inch barrel 1/7 twist Have used 64 gr powerpoint with good results but switching to a hornady 75 gr tap . With the shorter barrel the round will stabalize with a heavier gr.

Hornady is not limited to one vendor for components, therefore they use best propellant for each individual application is used. In keeping with Hornady standards of performance, propellants are selected based on performance alone. The same goes for the primers. The Tap rounds very depending on what your wanting to do. Such as barier penatration for fragmentation.

Hope that helps .

One shot two kills "USMC"

Thanks for your knowledge and input!


TS


to the Armory!

Ron,
Did you ever get a response to your question? I just bought a 24" s/s bull barrel for my AR and was told i have to use the heavy bullets with my 1/9 twist?

Some 1=9" twists will hold the 68-69 grain bullets, but some will not. I think that is because they are actually closer 1-10. 1-8 or 1-7 is what you need for the heavier bullets.

I think I shot the same ammo with the same results, hopefully 68-69gr will work better.

I'll contribute some data, particularly for those that are concerned that a 1:7 barrel will 'overstabilize' light bullets.

My Noveske 16.1" Recon Stainless barrel will shoot 3-shot groups under 0.7" (or better) @ 100 yards for 40-grain Nosler BT (3450 fps), 50-grain Sierra Blitzking, 60-grain Sierra Varminter, 75-grain Hornady Match. These are the only bullets I have loaded for to date, but every one of them will group.

Never thought I'd use "1:7" and "prairie dog loads" in the same context, but now I'm a believer.

The load that works best in my Colt 1:9 twist
primer: remington 7 1/2 benchrest
powder: Hodgdon Blc2 26 gr
buller: winchester 64gr PSP
brass: LC or Rem
When my rifle was new it would shoot 1/2moa if I did my part. 10k+ rounds later its grown to near 3/4".

Sorry I forgot to add that my barrel is a 20" not 24".

Thanks for the info weldithot79


This post has been edited by golden: December 19th 2009 5:39 PM

Need help!! Just built a Noveske 10.5" CQB Barrel with 1/7 twist and would like to know a good round to use with this setup.

First, welcome to the Armory!

To define a 'good round' depends on your purposed for this barrel. Varmint shooting? Punching paper up to 300 yards? Defense? For the latter two, the Hornady 75-grain TAP is very accurate and effective out of shorter barrels.

I am using it for work I am a police officer and I shoot a lot! So I want something dependable!!