I think this was covered up thread but you don't want to shoot 22 through a rifle can. I'd buy a can for your 300blk/556 and then get a 22 can. You need to be able to clean the 22 can. There are some options out there for user serviceable rifle cans but they never seem to be nearly as good as a fully welded. Plus it's ridiculous hanging on the end of a 10/22.