pccraig
Member
I’ve been shooting HP service rifle matches for a few years now. Currently I shoot a pre-ban Colt HBAR 5.56 A2 with a 1-7” twist and a nice crisp two stage Geissele trigger. I’ve found that the larger 75gr and 77gr bullets provide me the most consistency in my loads, particularly out to 600yds. I’d like to have a match rifle option, so I’m considering purchasing a new, flat top upper for my Colt lower, and have some questions I hope you guys can share your opinions on.
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My service rifle upper has a 20” barrel, but I’m considering a 24” bull barrel upper with a crowned barrel, and free float handguard. I intend to mount my rear peep sight on the rail with a Lyman 93 globe clamped onto the barrel to increase my sight radius.
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1.***** The 1-8” twist is the fasted I’ve found in this length, does the additional 4” in barrel length compensate for that, or is that even an issue ? **
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2.***** Any reviews on the following uppers would also be a big help:
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a.***** Stag Arms Model 6H 1-8” twist, http://www.stagarms.com/right-handed-upper-halves/
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b.**** DPMS FTBL-LR-02* 1-9” twist, *http://www.dpmsinc.com/223-24-Bull-Barrel-Assembly_p_2542.html
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c.***** Rock River Arms 24” Varmint A4 1-8” twist, http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=270
*
My service rifle upper has a 20” barrel, but I’m considering a 24” bull barrel upper with a crowned barrel, and free float handguard. I intend to mount my rear peep sight on the rail with a Lyman 93 globe clamped onto the barrel to increase my sight radius.
*
1.***** The 1-8” twist is the fasted I’ve found in this length, does the additional 4” in barrel length compensate for that, or is that even an issue ? **
*
2.***** Any reviews on the following uppers would also be a big help:
*
a.***** Stag Arms Model 6H 1-8” twist, http://www.stagarms.com/right-handed-upper-halves/
*
b.**** DPMS FTBL-LR-02* 1-9” twist, *http://www.dpmsinc.com/223-24-Bull-Barrel-Assembly_p_2542.html
*
c.***** Rock River Arms 24” Varmint A4 1-8” twist, http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=270