I bought a rifle barrel liner for my 1882 Remington 10ga SxS. It's marked 10ga 40 - 2 1/2. Picked up some 40-72 brass that I trimmed to 2 1/2, also a Lyman mould. The only data I found was for the Sharps 40-72. Mine is more like a 40/60 or 40/65 with the shorter cases. Does anyone have load data for the 40/60 or 65 ? I know BP will work, but I'm trying to use nitro. Thanks for any help. Paul