I have a William Evans from 1901. Chambers still 2 1/2". Remingtons (Gun Clubs and STS) drop right in. So do Herters (Cheddite), Federal Top Guns, and Winchester Super Targets. I don't have any AA's on hand to try. But with a lot of options that work well in my gun which is the same vintage as yours, I think I'd try other hulls before modifying the chamber. I do get a very tight fit on once fired Fed Gold Medal hulls. That's the only "problem child" I could find.
Last edited by L. Brown; 01/22/22 09:12 AM.