Sounds like a revolver with a split personality. LOL
My 460 S&W is my multi-caliber revolver. I will get the cylinder sent to TKCustom.com and have it made to handle moon clips. It does not keep me from continuing to single load cartridges or to use a Speed Loader for whatever cartridge I am wanting to use. It just opens up using semi-rimmed cartridges of 45 caliber.