HELP!!Lyman 457643 & 457193 Meplat

[brad925]

I have been looking but cannot find any reference to the meplat size to either of these designs. Can anyone help me?

[beagle]

Not having my moulds handy, I can't say for sure but i'm betting on the 643. It's a big, old wide bruiser and shoots really well in my Marlin .45/70./beagle