Just a reminder of the many possibles for .400 Whelen bullets: Any .416-caliber bullet, and there are many.
If Sir Jerry has a hankering for some .411" Nosler partitions made from the 400-grainer .416s, no problemo.

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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.