Re: 1 in 12\" twist in 300 Ultramag
i'm with POP on this one. you're getting 2" and under at 330 yds with a big game hunting gun.what level of accuracy are you looking for? if you're looking for better than that,sell the Montana and get a Lawton.
i would also agree if the 180's shot better, i'd go with them because the terminal performance difference would be measured in BFD units.