I have a M1917 S&W .45 revolver. It can shoot .45 ACP ammo with or without moon clips. Now, the .45 ACP cartridges without moon clips headspace on the case mouth. With the moon clips, do they headspace on the rim (moon clip) or still on the case mouth?
The reason I ask is that I read that you can't use .45 Colt brass because the rim isn't as thick as the rim on the .45 Auto Rim, but would that really matter if they still headspace on the case mouth?
I'm not trying to reinvent that round, and I have .45 AR brass coming, but I'm curious. I do have some .45 Colt brass. Again, just curious.