Thanks for the inside info.
Have you made any .455 cases from .45 Colt? Besides shortening, did/do you have to do anything else? I have been thinking of making some from .45 Colt or .45 Schoefield cases.
My 1917 Mk VI has been shaved, but just barely. It works fine with acp brass and S&W half moon clips. .45 Auto Rim brass will not work (I tried it), the rims are too thick. Full moon clips I have tried are too thick.
I did get a box of Hornady .455, and fired 6. or rather, 5. One didn't fire, and a couple of the others pierced primers. So, essentially, my gun is cut just enough so .455 won't work right, but not enough to take AR brass or a thicker than S&W 1/2 moon clip. .45 Colt/schoefield rims are just a little thicker than the .455, so I'm thinking that may make enough of a difference for the brass to work. Loads, of course would be kept to Webley appropriate levels.
Thoughts on this?
All else being equal (and it almost never is) bigger bullets tend to work better.