Excellent inputs from the Square Table Knights above.

The only thing I might add is that some of those Ruger No. 1 rifles have very short throats,
and sometimes need to have the throat lengthened a bit in order to use all bullets
without trimming brass short, etc.
A 350-gr Hornady RNSP might jam into the rifling when crimped on cannelure in some rifles,
whereas the 405-gr Remington FNSP has an ogive designed for "no-throat" and chambers with ease.

I like a 400-grainer at 1800 fps in a Marlin 1895 or Winchester 1886,
but not less than 2000 fps in a Ruger No. 1.
Cast bullets or solids do kill well with little or no expansion,
and so will about any other bullet of .458 caliber !
A 250-grainer at 2600, is pretty neat from a Ruger No. 1.
Almost as much fun as the .458 WinMag downloaded to 2700 fps instead of 3000 fps.
Higher velocity is mostly wasted for practical purposes.

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Sir Bob did a .45-70 LT (Long Throat) and could handle 500-grainers at SAAMI .458 WinMag levels in his Ruger No. 1.
Rechambering the Ruger No. 1 .45-70 Gov't.
by adding the SAAMI .458 WinMag throat onto a .45-2.6" chamber = .45-70 Elko Magnum, CIP homologated,
fully capable of beating the SAAMI .458 Lott, just like the .458 WM+ does.
I called it the .45-100-2.6" Sharps Winchester Throated before I knew it had already been invented
as the .45-70 Elko Magnum.
Here is a 22"-barreled, 7.25-pounder that can still fire factory .45-70 Gov't. ammo in a pinch, heh-heh-heh:

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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.