May be a very dumb question, but can you fire .45 ACP (with moon clips) in a .45 Colt DA revolver?
As has been pointed out, no, you will not be able to fire ACP rounds in the 45 Colt.
Hammerdown, are you sure the AR will fit in the LC? I think the rim will be too thick, just like the ACP with the clip.
I have seen somewhere a conversion that allows you to use 45 LC with clips in a handgun so chambered.
There is a link somewhere or search for moonclip conversions.