So, I've always thought the twist rate on the Bushmaster was a bit leisurely. No real good data as my gun shot pretty well, even with some heavier bullets in reloaded ammo. Don't confuse me with the facts, I'll change it anyway. I bought a 1:24 18" Satern barrel. Black finish on stainless, threaded, though I'm not a big fan of muzzle devices. Got a new forend and laminate stock and posted a pic on the forum:
http://450bushmaster.net/viewtopic.php?f=2&t=15801
Out at the range with another new gun, a Henry in 44 Mag. Not an ideal day, front coming in (which is good, we need some rain and to cool off...) with a pretty good north wind. And I managed to leave a couple of my rest bits at home, so didn't have my best hold either. In theory (see Hoot's sig...) it should be close on paper. New bore, but still concentric with the action, etc. In practice it was dang close, about 3" high and an inch or so right. I only shot four rounds of factory ammo, and decided to quit while I was ahead, got them all in an inch. Needless to say I'm tickled.
Hop