Howdy and Good Mornin' WD: I think the only problem you would have using the 45 auto rim cartridge is that the rim is almost double thickness or the normal or usual rim thickness. The case was designed that way - it's not like a shortened 45 Colt case, it's a different beast all-together.
As I recall, the auto rim case was designed to be used in revolvers previously chambered in 45 colt but shortened to take the 45 acp in the half moon clip. Same with the 455 Webley in the older Webley MkVI. This doesn't add up to a normal rim thickness and I think a normal extractor would have problems with it and would have to be designed specifically to handle the extra thick rim of the auto tim cartridge. Just my thoughts, thankee. Mikey.