Those shallow, sinusoidal "PDR" drive bands on the Hammer bullets would get their rounded peaks flattened, might spoil the magic. Probably would be an easy squeeze, but better to wait for a Hammer .411 factory bullet. Remember you can replicate .400 Whelen ballistics with the .458 WinMag and those 400-gr/.458-cal Shock Hammers, and G1 BC might be 0.419 or thereabouts. LOL
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.