My handi rifles real picky with ammo. It has a 1:12 twist won't shot any thing over 55gr with snot. I load up 55 grain nosler ballistic tips and they looked like you shot the target with buck shot. Tried different powders and weight charges. It shoots the best with the cheap winchester white box 55gr fmj. The rem 55 core locks shot ok. That what I use to hunt with. I haven't used it in years since I got my 6mm for grounding and coyotes. My handi rifle has the bull barrel. Hope that helps you.