My CVA Paramount was measured. Bore admits a .452" pin but not a .453" pin. Groove diameter is 0.462", 1:22" twist. Might be called a .452" bore diameter just like the internet pilgrim said. A Parker bullet of .453" diameter makes sense for that, and any sizing down would come from the ramrod. Soft lead, grease-grooved or paper-patched, sized to .454" might work too. That would be a good substitute for trying to pass off the .458 WinMag as a muzzleloader. But, hey, if a Sharps 1874 can be Gemmer-ized by hanging a ramrod under the barrel, so could a Winchester Model 70. All aspects of riflery may eventually be accomplished with a .458 WinMag.
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.
