Re: Shilen Ratchet Barrels
Did a side by side with two 1:8 twist 22-250's, one using the ratchet, the other a normal rifling profile.
Couldn't tell a difference in velocity or accuracy up close, but at 700 to 1000 yards the ratchet seemed to take about 1/2 moa less windage correction, and that was pretty consistant over the life of both barrels.