Cartrige ID

Can anyone help my with ID on this one?


Welcome to the Forum!

Only a guess, but based on dimensions I would suggest 10.75x65R Collath. If I guess poorly, rest assured those more knowledgeable will correct me!


I had a few thoughts - 405WCF, 40-72WCF, 40-70Sharps, 11.15x65R But non seems to be exact fit