I had my .458 out on Sunday chronographing a few loads.
350gn X over 78gn of H 4198 = 2582 fps and cases fell out of the chamber.
400gn X 74gn H 4198 = 2434 fps slightly compressed
76gn H 322 = 2380 fps
450gn TSX 72gn H 322 = 2381 fps mild and slightly compressed
68gn H 4198 = 2359 fps mild and most accurate load
I think the .458 is one of the most underrated big game cartridge we have, as it can be loaded down to .45/70 loads to handle deer and light game or loaded up to 2050 fps with 550 grain bullets and do it all. I also like the 300 grain X bullets loaded to 2650fps usig 75 grains of H 4198 and used this a lot for feral culling.
AGW
