Crosman 1100 shell

Shells for the Crosman 1100 Trapmaster air shotgun. This was sold in Western auto stores between 1968-1971. As the shells are long out of production, I made a copy of one I had on hand in FreeCad. To reload, I used a lower wad made of 1/16 automotive rubberized cork and an upper wad of paperboard from a cereal box, and #8 shot as that's what I had on hand. I printed it in TPE, as I was having trouble with the PLA I had breaking after it was fired. Flex PLA might work, but I didn't have any on hand. I included a copy of the printed shell next to an original one.