Quote: …... I see it's "Sharps" brass in .40/90 parent case .45 3 1/4". Pretty sure this is not the same head diameter as .450 BPE or .450 Nitro Express.
I stand with Daryl on this. Before you start thinning rims, etc. best mic the cases to see if they will suit. the .45 Sharps head diameter is different from the .450 Express. - Mike