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I shoot .379 or .380 bullets in mine depending on which gun I am using ( I have 6 or 7 38-55 rifles), 10 grains of Unique or Universal in Starline 2.082 cases. Great fun.
Starline also makes a 2.125 case but that is for black powder or breech loading use and not the best for cast bullets.
Some of the older lever guns have the longer chamber. I have a couple of boxes of Dominion 38/55 smokeless loads with 2.125 brass. If I remember correctly, the Uberti repros have the longer chamber also.
