Home Forums Hunting & Shooting Express Rifles and Big Bores Only The great 458 Winchester. Everyone should own one at least once

Sir Dennis seconds the motion
that The Square Table consider a classification of cast bullet loads,
.458 Winchester Magnum Cast Bullet Modi Operandi, with this provisional suggestion,
based on a 23" to 25" barrel length (average 24"), any COL, short or long:

Light Express: 400-480 grain bullet at 1800 to 2200 fps: LEMO
Nitro Express: 480-500 grain bullet at 2150-2200 fps: NEMO
Heavy Express: 500-600 grain bullet at 2150-2200 fps: HEMO
Bullseye Express: Any bullet weight at any velocity that shoots accurately, and is not covered by other MO brackets: BEMO

That is good enough for Four Five Eight Winchester Magnus Rex.
By Magnus Rex decree, consider it considered and adopted by the Square Table.

Nitro Express (NEMO) cast bullet loads coming up.

BENCHMARK would be a good benchmark for removing temperature considerations.
AA-2460 as suggested by Sir Dennis for the 485-grainer, would be a lower pressure load for same velocity.
H4895 could be used for any of the four classes of cast bullet loads.
So many good powders for the .458 WinMag that it boggles the mind ...