Hal,

I bought some some CH dies for my No.2 Express, good dies. I think this was a black powder cartridge originally with 340 grain lead bullet, but was loaded nitro for black with a 440 grain jacketted bullet. Is you gun nitro proofed?

I have the following loads listed - data from an old catalogue, page entitled
Standard ballistics of English cartridges.

Nitro for Black - 53 gr Cordite, 440 gr bullet, 1,675 fps
Black powder - 130 gr bp, 340 gr bullet, 1,850 fps
Black powder - 130 gr BP, 380 gr bullet, 1,775 fps

check out posting in reloading section - details from Marrakai

577/500 No2