A few years back I had a 1/8 twist #5 shilen screwed onto a smooth mdl 77 action and stuck it in a McMillian. I had the chamber cut to fit the 125 grain partition but it loves the 120 grain ballistic tips and 129 grain interlocks. I think I'm gonna give the bergers a shot next. It wieghs about 9 1/2. I've packed it more than I thought I would and really like it for long range rock busting.