Re: .257 WBY Project
I agree, I wouldn't rebarrel. I have both the 24 and 26 inch 257 wby's. Either has no problem doing what you ask for varmints, deer and antelope. The accuracy loads are different in each rifle so I can't tell you the velocity difference apples to apples. My accuracy loads are about 70 fps difference I think but different loads so it doesn't matter. I am shooting the 100 grain barnes ttsx at over 3700 fps and it is a great deer/ antelope rifle. The barnes will not tear up the coyote hides.
Predictions are difficult, especially when they involve the future