Too hard and Too small. Too hard to bump up with powder to the rear so you will have to ride the bore at low speed. Or if your good with a Hammer, take them out to the anvil in the Blacksmith's shop and whack them with a Two Pounder until they are .460+ enough to size again. The Hammer Test 2.0
Good summary of the problem by Sir Dennis, but I suggest using a bench vice to squeeze the bullet to fatten it, instead of the 2-pound hammer. Put a torque wrench on the vise handle for repeatability. Just kidding.
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.
The Hammer Test 2.0
