Ill start by saying that I am not a fan of do it all Suppressors. They always disappoint me.
If I was going with 3 "most use" cans I would get
- .22lr can. Most are rated for higher now so you could throw it on .22, .17hmr, 5.7, etc...
- .30 cal can. 300 blackout, 6 arc, .223, .308 can all...