My Parkers and Lefevers have 2 5/8 or 2 7/8, my Remingtons have 2 3/4. As suggested RST 2 7/8 won't hurt a gun made for 2 3/4. It's a shame you don't reload, especially for the short ten. It would be so much cheaper and any load would be at your finger tips. Maybe give it a second thought ?