Get a 8 twist,which is what most come with. A savage 10 th xp would be the cheapest way out and in my opinion would shoot better than any Remmy. A tikka in 6.5x55 or 260 would be great but are as hard to find as moon rocks.
A 260 with a 140 grain bullet is plenty for just about anything in my opinion. Greater retained energy and less wind drift than the 308 plus exceptional sectional density for maximum penetration. Not to mention very little recoil.