I was under the distinct impression from this line that shooting low-pressure 2 3/4" shells in 2 1/2" chambers was not only acceptable but a better alternative to screwing around with the forcing cones or chambers.
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=609946&page=1

Based on this line, I scoured the internet and managed find a flat of Federal 12 ga 2 3/4"., 7 1/2 shot, 1 1/8 oz 1145 fps muzzle velocity shells (at $11 a box!). I plan to shoot them in both my Reilly Damascus hammer gun from 1897 and French 1925 boxlock. I'll let you know of any adverse consequences.

Last edited by Argo44; 03/13/22 06:24 PM.
Baluch are not Brahui, Brahui are Baluch