Called Roy today, unfortunately he said he doesn't have a 45acp chamber reamer around and would need to get one. Still looking if anyone else in the area has one around.
I have an ATI 1911 with insufficient headspace. Close enough it'd actually cycle WWB ammo that was .005" shorter case length (IIRC? It's been three years), chokes on everything else. I don't really want to buy a new barrel or a reamer I'll never use again, curious if anyone in the area would be...