Hornady occasionally makes a run of .455 Mk II brass.

I have a nice S&W .455 Hand Ejector that remains unmolested. Hornady also makes the correct bullet for your Manstopper rounds.

Here are a couple of photos of my S&W and the ammo I loaded:

I displayed my S&W on this thread: S&W .455 Mk. II Hand Ejector 2nd Model #69234

Curl