Sir Jerry,
Note that the 450-gr CEB Safari Solid is a better option than the 400-grainer designed for lever actions.
The CEB brass 400-grainer wastes case capacity in both .45-70 and .458 WM,
and does not take advantage of the magazine length allowed by SAAMI COL.

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.458 WM+ loads are impossible with the "funny-banded" CEB 400-gr brass FN.
The funny-banded 450-grainer with a longer nose will barely allow a COL of + 3.340".
The 450-gr CEB at +2350 fps with COL of 3.380" is very functional in the average .458 WM rifle.
The 450-gr CEB brass FN is about as good as it gets for a SAAMI .458 WM.
MIB terminals here:

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The 400-grainer was tested at only .45-70 Gov't. equivalent velocities:

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Note that the bullet stayed straight.
Some theoreticians say that the shortness of nose projection of the bullet may limit penetration when compared to longer nose projection ...
I will not accept that until it has been tried with low drag PDR bands of Hammer Bullets, on an FN solid.
I think even the CEB 400-grainer would score better at higher velocity.


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.