Only the slowest powders, such as Reloder 25, Magnum, Retumbo, MagPro, H-1000 and similar numbers, are suitable for the 8mm Rem Mag. Bullet selection for the 8mm is surprisingly good, considering the few cartridges available in the caliber.

Mag. In English terms, it's a . 323 caliber. The standard 8 mm bullet weight is 200 grains, which is a nice compromise between a 180 grain .

338 Winchester Magnum offers a selection of bullets from 185 grains to 250 grains; while the 8mm gives a shooter the option of the lighter 125- and 150-grain bullets—the big 8mm Magnum will absolutely give the best results with bullets from 170 grains to 220 grains.

8mm Remington Magnum maximum C.I.P. The common rifling twist rate for this cartridge is 254 mm (1 in 10 in), 6 grooves, Ø lands = 8.00 mm, Ø grooves = 8.20 mm, land width = 3.10 mm and the primer type is large rifle magnum.