I own a .340 Wby. Mag., and will never sell, or trade it: I push a 250 gr. Barnes X 3062 f/s. 5200 ft/lb.the rifle shootsunder a half inch groups at 100m. Go to http://www.chuckhawks.com/super_338_Mags.htmfor more info. on other .338 cartridges. Good luck.