Once upon a time I was a Class III Federal Firearms Dealer. A silenced pistol gets louder with each shot as the internal elements heat and the wiper wears. About 2 really quiet shots is all you get at one time. A small bore rifle with a large silencer might get off 10 rounds before it is time to let it cool down.
SO9
Ruger 10/22 with a brass empties bag?
Roughly 10 shots and it gets louder.., hmm..
Would that be enough to keep your wussified neighbors at bay from making noise complaints?