So I have just acquired a Smith and Wesson Second Model MKII 455 Hand Ejector, originally chambered for the 455 Webley but at some point in its life was converted to take 45 ACP on moon clips. I like the ability to use the moon clips so I would like to stay in that ballpark or in the 45 AR area with my loads.
My issue however is that the barrel diameter is larger than the diameter of jacketed 45 acp bullets. I will be reloading and want to step the bullet diameter up slightly. Here's where my train of thought gets interesting.
DISCLAIMER: I already know the risks of trying loads outside of the published load data. I believe that the experimenting is fun and can be done safely when following good practices. I would like the discussion to avoid trying to talk me out of experimenting, but I would like to know if any specific thought I have would be inherently dangerous. These will just be "plinking" rounds, and will be loaded very mildly.
I have found some Hornady swaged bullets, 255 grain, .454" diameter that I think would do the trick. Since one of the intended uses for these bullets are for 45 Colt rounds, it seems like reloading the 45 ACP casings using 45 Colt dies would prevent me from resizing the casings too small to fit the larger bullet. I believe that this would give me some more accurate rounds than the standard .451" jacketed bullets.
So my question to you seasoned reloaders, what do you think of my ideas? Could this work? Do you think trying to use the 45 colt dies would cause issues with the brass? What other ideas do you have? Thank you in advance!