I've had a .22 Benjamin Nitro Piston gun for a few years. I've practiced quite a bit and tried different pellets but I'm not satisfied with accuracy. About an inch and a quarter at 25 yards. Not to mention concerns about sufficient power.
Two years ago a wounded raccoon screwed itself into the most inaccessible place under my deck and died. I had to take a lot of my deck apart to find t and remove it. I hope I don't have to go through that again.
I've been working at the range with a couple of .22 rifles, a bolt action CZ and an old Stevens 87A which is pretty neat, 24" barrel and capability to function semi-auto or as a bolt action. I put 4x scopes on both. Among the various ammo I've tried, CCI subsonic hollow point 40 grain seems most promising. Also Standard Velocity solids.
I do have a suppressor but it's a 30 cal center fire, non serviceable one and I don't want to be putting a lot of rimfire ammo through it and get it loaded up with junk, reducing its internal volume. I'm working up a 22 K-Hornet subsonic load using jacketed bullets. I could try 300 BLK subs but honestly I'm concerned about ricochet. There are new houses not close, but close enough that it could, under the right circumstances, be a concern. And yes, people call the police anytime they think they hear a gunshot. They complain when the police department shoots at the police range!
Side note; Ya know, they live back there in their half million dollar houses in golf-community subdivisions on what was agricultural land when I moved here...and they complain about any and everything, out buildings, vehicles, noise...then they ride past my house on their Harleys with no mufflers cranking on the loud-handle when they come out of the subdivision and hit 60-70 mph in the 35 mph zone...
The city has had deer culling projects and the outrage from some residents was unreal. They'd go to where the culling was happening and blow horns and bang pots and pans to drive the deer away! Two years ago a hemorrhaging disease spread by biting flies went through the local deer herd. Many animals died an agonizing drawn out death. One aspect is a very high fever. They seek deep water to try to cool off. There is a containment pond for the new housing development just south of my house. Many deer went there, then crawled into all the tangle and undergrowth to die, 50 feet from my house. Nasty.
Anyway...I have woodchucks living in dens underneath my deck. I try to exclude them but they just find a place to chew through wood and scrape out a passage in the ground and get in. I've tried live trapping with no success (catch coons all the time though). They go underneath any cars parked and chew on wires and anything plastic, even sometimes climbing up in engine compartments. And at this time, I swear sometimes I can detect a poop smell coming from under the deck. Something has to be done.
Among others, one of my biggest concerns is a wounded varmint making it back under my deck and then expiring there. I want to anchor the thing right where it is, DRT as they say.