I shoot 2 7/8" shells in my 1882 10ga Damascus Remington. I reload all my shotgun shells. With the 10ga a moderate 12ga load data is used. 18 to 19grs of Red Dot, Green Dot, or Promo and 1oz of shot. A 16ga fiber wad inside a plastic 10ga wad [ inserted before the shot ] and you're all set to go. For 12ga just drop the powder charge a half grain. All my Remington 12ga guns, 10 of them, have 2 5/8 chambers, Damascus and steel. The 10 has 2 7/8 chambers. As said, it's pretty easy to be off a 1/8" when measuring chambers. One will have 9/16, another 5/8, and maybe even 3/4 of a inch. Don't worry about it. And I wouldn't ever lengthen the chambers or forcing cones. You're removing steel where it's needed the most. I've been shooting my Damascus Remingtons, Parkers, or Lefevers for about 23 years weekly with no problems. Forget chamber lengths, just shoot it and have fun.

Last edited by Paul Harm; 04/11/22 11:31 AM.