I have 2 264 mag. both are built on the 03 mauser recievers. both have douglas barrels, both barrels are 24 inches, I shoot a 129 grain hornady bullet in both of them. both guns are fitted with custom stocks one blonde laminated, and a grey laminated. both crony over 3100 fps. on white tail deer it will put them down, altho I dont use them for hunting any more, I still take them to the rifle range every year, I would hate to guess how many shots have fired threw thease guns. they are still tack drivers. I think this cal. was devolped from from the 458
I had a Ruger 77 Stainless I bought new in 2002. I shot 15 whitetails with it using eveything from factory 140's to 85 grain hollow point reloads. I had one of those deer drop on the spot the rest wold usually run a little ways but I never Lost any. Ammo got up to $38 a box and I could never get good groups out of this gun, about 2" at 100 yards and thinking it was me I let other people try it and they could'nt get any better groups either. I like the .264 but I recently traded mine for a 25-06 and will probably never own another one. Good caliber but I think you can do the same Job with a .270 and cheaper.