Cast Bullets in the .458 WinMag continues with the question,
just what length of a .461" diameter right cylinder can be fitted into a SAAMI .458 WinMag throat ?

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A little less than 0.5" length.
Keep it down to about 0.4" and it is an easy fit.
For a SAAMI .458 Lott, the corresponding length in inch units is ZERO.

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.