Re: 22" vs. 24" vs. 27" barrel; velocity differnce on a .260?
no one can answer that question, the vel may actually go up! it depends on that one and only barrel, and the load. Even P.O. Ackley did tests on this question. Shooting, cutting , recrowning, firing:repeat, repeat. If you are going to be happier with a shorter barrel, cut it. Rework your loads as if it were a new gun.