Lovely piece and I am sure Alex Henry rifles will shoot as great as they look.

I have an old double in 500/450 BPE 3 1/4" magnum express ( the name of the calibre alone is enough to get any Brit rifle shooter excited), that I would like to get shooting.

I am aware of Marraki & Tinker's loads using Hogden Varget but I was looking for a 4198 load that has actually been used along the lines of Siefrieds formula. My rifle was regulated for the 270gn load which must have been the hottest magnum of its day.

Has anyone actually developed loads for this case with 300gn jacketed or ~ 270gn -300gn- 350gn cast projectiles?

Any advice would be appreciated.

I have found 500NE 3 1/4" or 470 NE cases simply necked to .450" fit a treat with a short neck like the cases on Tinkers handle.
Fraserdouble