RE: 257 wby mag?
I just happened to know of a guy that chopped 2" off of his 257 Weatherby. At the range over the chrony he lost about 90 fps going down 2 inches. The 257 is an overbore cartridge and thus requires a 26" barrel to reach its potential. If you like the rifle and it fits you well buy it and you or the game you shoot won't know the difference.