My only experience with 30-378 was I guy that hunted on a lease with me in Ga. He couldn't shoot it for beans and would blow big holes in deer and have to come get me to trail them up because he gut shot them or one time he blew one's foreleg off. He didn't reload and I think he was paying about $100 for a box of 20 rounds so he did not shoot it enough to be good with it.