.257 is an excellent caliber choice IMHO for deer and varmits. The 257 wby is an awesome round andvery flat butcomes with a price ofshorter barrel life. It is a reloader cartridge IMHO, so if you buy off the shelf ammobetter to stick with 2506 rem.

I plan on building a .257 chambering myself butright now am leaning towards 2506AI instead of the 257 wby on the account of availability of brass and longer barrel life.

One of my good buddies has taken both elk and moose with .257 (2506rem and ,257 wby), I don't consider it the best choice. Mine will be strictly a deer sized game and paper puncher rig.