Robert, that's a funny one, but not too funny. as at last June's Quigley I observed a party of 3 shooters dealing with like issues. One shooter owned 3 rifles, carts, ammo, etc and two others were sharing all the equipment. I believe it was 38-55 ammo going into a somewhat larger chamber in a rifle not chambered for 38-55. No one else was helping-out as some-others were also having chambering problems of their own, with overly long cartridges, fat shells, duds, fouling etc.
Our squad was a lively bunch