Rusty McGee used Hornady .416 gas checks on his cast bullets sized to .413". Better to be a few thou bigger than a thou or two too small with the gas checks.
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.