Want to get higher velocities with the 450-gr TSX and the self-cleaning CFE 223
in your SAAMI .458 WinMag ?

Load that TSX to 3.680" COL by crimping in the last cannelure, the 4th groove.
Pour in more CFE 223 with a drop tube.
Single load the cartridge into your bolt-action or single-shot rifle.
You will beat the SAAMI .458 Lott in either higher velocity or lower pressure, maybe both if splitting hairs.

Ron aka "Rip" for Riflecrank Internationale Permanente
NRA Life Benefactor and Beneficiary
.458 Winchester Magnum, Magnanimous in Victory
THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.