I used to have 9mm rimfire garden gun, not much use to be honest, bought a box of 50 and sold the gun with about 1/2 the shells left. It was an off ticket gun that an old guy wanted rid of so after talking to Police HQ they were happy for it to go on ticket and registered. Had to add about 1” to the Butt as it was just under the legal overall length.

Also had .22 shot shells at one time, the spread was terrible and if you were shooting more than 5 feet you would hit nothing.