Can .223 cans fit .22 LR?

[kernelkrink]

As long as the bullet will pass without striking a baffle or blowing up due to excess pressure, any suppressor will reduce the sound. How much suppression you get may be less than it could be if the can were designed for that round.

[Sid_Vicious]

Some years ago a couple of guys in the neighbor town was caught for illegal hunting. They used a 223 with a 30cal can, later when their equipment was for sale at a lokal gunshop I bought the can. (In Norway we don't need to apply for a NFAform or like it, it's a free item to purchase) Our weapons have to be registred, but cans are free.
Anyway I know these guys loaded their own ammo to get it subsonic and they was doing it for years before they got caught.
So to silence a gun it is important to have the right ammo.

[Drsteagle8]

I have a YHM Stainless 5.56/.223 QD (Quick Detach) suppressor. It works great on my .22's including the walther p22 on that it is so quiet even with super sonic rounds (i guess because the barrel is so short). Anyway, YHM says if it gets lead build up from .22s, just fire some .223's through it and it will clean it right out. P.S. some suppressor manufacturers have had posted not to use their .223 suppressor on a .22. You might want to check with the manufacturer of the suppressor you have or are thinking of getting.