seven millimeter, shooting times western all the gun you'll ever need.
.204 ruger very little recoil and muzzle rise, will be able to see your hits.
.223 or 22/250
75gr a max and bthp are 2.490 don't have anything on the eld. you can paint bullet with permanent marker and chamber to make sure your not jamming into rifling, jamming in to rifling could raise pressures.