22 BPCR

[Don McDowell]

There's just not that much you can do with a 22 chamber.. So what ever "match" chamber the builder of your rifle is likely to work as good as the next.
The bigger discussion probably comes from which barrel is better,, (Douglas, Green Mtn, both work quite well)
But then there's the end argument in which ammo is the best and the rifle is the only one that can settle that one. ( Norma TAC, Norma Match, Sk rifle match, and Aquila rifle match have all earned high points in rifles that hang around here) When you do get around to ammunition testing, do it at the ram line.