Revised from a work by Nick Harvey about the .458 Lott,
a hand-drawn sketch by Jack Lott was spiffed up by a professional draftsman.
Thanks again to Australia.
The dimensions in red below have been altered by -0.100" and +0.100"
to correct the debauchery of reaming a .458 WinMag to 2.800" brass.

[Linked Image]

Yes, the .458 Watts Winchester takes brass that is 2.700" long.
Long COL loads for the .458 WM+ are perfect in the .458 WW, same-same,
though might be excessive in the SAAMI .458 Lott.

The only way to improve on the .458 WM+ with heavy/long bullets is to increase the MAP to 65,000 psi
and/or use a particular bullet that can be loaded to longer COL in the .458 WW than in the .458 WM+.

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.