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

The dinosaur hunter would do well with a .458 WinMag and proper-bulleted load.

Michael McCourry is pictured below with his 18"-barreled .458 B&M proprietary chambering (short throated)
that, with 3.000" COL and 2.240" brass length (based on RUM brass),
can almost equal an 18"-barreled SAAMI .458 WinMag with 3.340" COL and 2.500" brass length.



Michael is trying to induce a charge from the T.rex,
holding fire until he gets a scrotum shot.
Behind him is PH Andrew Schoeman of Baobab Hunting Safaris
saying “Wait wait wait …”

If we put a .458 WinMag throat on the .458 B&M and load it out to 3.260" COL (.458 B&M+)
and load the .458 WinMag out to 3.600" COL (.458 WM+),
then they both have the same case capacity as the .458 Lott,
and both will beat the .458 Lott for higher velocity or lower pressure or both,
due to the throat,
if all three chamberings are used in barrels of identical length and rifling characteristics.