The original barrels aren't big enuf at the muzzle to do a rebore job to .338 or .358". These original 1 st and 2nd year production M110's handle very nicely as is. I think it would be a perfect gun for deer and antelope with 150 cup & cores or go hi tech and use the 130 gr Barnes X for a little higher vel if wanted. Right now mine has Weaver bases, high Weaver rings and a M8 4x Leupold on it, still very lite and sweet handling. It also shoots well with the barrel iron sights as shown in Fireballs pic. A guy don't need the high rings but I don't have to push my cheek into the comb hard and it just comes up right for me. MB
