Bear Creek Arsenal Complete Uppers

[1Shot]

It is the 20" straight fluted 5R SS. The only factory ammo I have shot is Hornady 123 SST and it HATES IT. 3" groups at best. It will not shoot the 123 SST bullet accurate even with hand loads. The 1" groups are with 120 Sierra Pro Hunter, Hornady case, CCI BR-4 primer, 28.5 grs IMR 8208, COAL 2.250 and I used a medium Lee Factory Crimp averages 2575 fps.