[Warhammer]

As others have said, rimfire cans get really dirty really fast. This is especially true on handguns or shorter carbines, where there is not enough barrel length to burn the powder in a 22LR case. Add to that the exposed lead bullet on most rimfire ammo, and you get a lot of lead and carbon buildup inside a rimfire can.

I prefer a small diameter (1 inch), monocore design for rimfire. They're easier to disassemble and clean than stacked baffles, and you don't have to worry about baffles getting stuck together. The smaller diameter is less likely to interfere with the original sights on your host gun. It's tempting to try to use a larger caliber can as a one-size-fits-all solution, but a can with a larger diameter bore will be less effective at suppressing the noise.