Can for 9mm and 30-30?

Very new to supressors but with how quickly the stamps seem to be coming back and prices on cans seemingly coming down a bit I'm thinking of jumping on one. Curious if it would be possible to get something that would work for my 9mm pistol as well as my tactical 30-30? Do I understand it correctly that a 9mm can should be feasible for the 7.6x~mm 30 cal round but not the other way around?