OK, I thought I had my mind made up on a 7mmSTW with a 30" barrel. But more and more people tell me that I will have to re-barrel at about 1,000 rounds. I'm working with a model 700 action with a 8mm mag bolt face. Not wanting to really change the bolt face. i'm looking for a nice smooth custom build. I will be punching paper and using for anything from groundhogs up. I have another 8mm mag so don't need a large caliber. Just looking for a caliber that will shoot flat and decent speed. but not trash a barrel. What are my options?