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

Sir John,
You might find some of this interesting:











A .458" diameter right cylinder displaces 41.66 grains of water for each one inch of its height/length/seating depth.
Correcting the 2.4891" long R-P brass to 2.5000" length makes the R-P .458 WinMag brass have 95.3 grains gross water.
The Quality Cartridge .458 B&M brass was measured at the same sitting with same technique.
It is virtually identical in case capacity at 95.0 grains H2O gross, only 0.3 grains smaller,
for these compared lots of once-fired, not-resized brass.



The short and light CEB brass bullets are good in sub 3.000" COL .458 B&M, but would be plumb peculiar in a .458 B&M+.