Service rifle competition.
For the past few years I've been shooting SR competition with a standard Colt HBar A2 with a 20" 1:7 barrel and iron sights.
My go to load included a Nosler CC 77g bullet.
I've recently completed a new build. A 16" M4 style rifle with a mid-length gas system and a 1:9 twist with the Hi-lux 1-4.5 optic.
Now I'm wondering with the shorter barrel and "lighter" twist, should I downsize the projectile.
Any insights would be appreciated.
For the past few years I've been shooting SR competition with a standard Colt HBar A2 with a 20" 1:7 barrel and iron sights.
My go to load included a Nosler CC 77g bullet.
I've recently completed a new build. A 16" M4 style rifle with a mid-length gas system and a 1:9 twist with the Hi-lux 1-4.5 optic.
Now I'm wondering with the shorter barrel and "lighter" twist, should I downsize the projectile.
Any insights would be appreciated.