Here is the choice insert from NECG.
A full 45 degrees forward slant is not required:

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Here it is on a .458 WM M70 Classic:

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A similar one on a .416 Dakota M70 Classic:

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The next best thing:

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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.