well i sure dont know your rifle but after shooting one with a barnes 270 grain bullet i would do it again but if you dont reload i would dhoot a 300 grain nosler should be easy eonugh to get some premium ammo for the 375 with a nosler partition i really like the swift a frame it probally my favorite on bifg suff for sure over 375 so try some swift and noslers but try to stay with the 300 grain bullet for the big bears you will be better of shoot the 300 grain sierra bullet is ok on bears they are not like the other sierria they are tough as heck and fly real good and get you a reloading press if i can reload anybody can its simple and safe