Originally Posted by remcraz
If you load both to max charge and use the same bullet (168 berger) which barrel would have the longer life. I am going to build one of the two and want the one with the longer barrel life. I dont shoot compatition but practise alot
Call me prejudice, or call me, been there, done that. But that is a hands down 7MM STW answer. The law of deminishing returns comes into play here also. The velocity difference between the two, versus the powder to get that is quite high. That being said, the more powder you burn, so does the barrel. I have been a STW fan since it's conception, and have experienced extremely long barrel life in my own rifles . ( plural)
I have heard of 1200-1500 rounds before burn out. In the case of the 7 RUM, I have heard of them " biting the dust" at way less then a thousand. Actually heard of one that didn't see 600.
As another part of your equation, I would like to throw in the accuracy and shoot ability issues. I had a 7 RUM a while ago, that at best was very finicky. By the time that I got the thing to shoot, I had about 200 rounds through it. Hear comes the good part. When I finally did get it to shoot, the velocity was no better then my STW's. And to be totally honest, it wasn't as accurate as all the hype made it out to be. I believe that you can have TOO much of a hood thing. What I mean by that is, the 7 stw is about as overbore that 7mm can be and still be SHOOTABLE.
This may give you a little to think about. But my vote goes to the STW, imagine that !!