I've been considering one of these overbore beasts for some long distance work. One concern I have about this round (and others in the Weatherby line) is excessive throat erosion and reduced barrel life. I think in order to be effective with a round like the .30-378 I'd need to practice fairly often. I'm not expecting to shoot this gun as much as my .223 or even my .308, but I am wondering what kind of barrel life might I expect after modest amounts of practice, say 40 rounds or so a month. I hope those of you with .30-378s or experience with other high velocity, overbore cartridges (i.e. .257 Weatherby) might be able to help me out here. Thanks.