I own a Delux, 1970's era 458WM CZ and was playing with the idea of shooting the thing at Long range just for fun. It is quite an accurate rifle for a big boomer. Anyone done any shooting of the .458WM at long range? I would be interested to know what would be the best bullet to try and any other load data. I have shot various bullets through the rifle from 510 grains down to 350 grains, as well as some 405grain cast bullets. Most shoot very well if I can hang onto the thing. I have shot a number of deer etc with this rifle and it does put a nice hole in things.