Nopride2,
Most of the 'vintage' cartridges could be loaded to higher than original pressures (in a the right rifle).

I could say that my .450 3 1/4" BPE cartridges are suitable for Elephant - if shot in a Chapuis; loaded with 480 grn solids & filled with enough smokeless powder to push them at 2125 fps. The only difference between the .450 3 1/4" BPE & the .450 3 1/4 N.E. is pressure after all. But that's not the point!

Therefore it's more sensible to dicuss the relative merits of these cartridges as loaded to 'factory' ballistics.

Regards
Webley