Had to so with .303 and '06 hard ball bouncing around the farm land I assume. I guess 6.5x55 FMJ stuff is OK?

I'd forgotten about the actual calibre, I thought the regs. used to say nothing larger than .270, but of course, the .270 shoots a .277" bullet, but I guess it's OK.

I used a 6.5 Rem. Mag. for wood chucks in Middlesex and Oxford counties when I was a kid (post high school). Worked a treat on them. In those days, it was dairy country, with lots of grazing fields abounding in ground hogs.