And, this is very likely my next move in "air" guns,... the simple blow gun.
When I was in college, we had a house that had a large living room that was at least 30' wide. On the far wall, we had a piece of plywood against the wall that was the back stop for our blow gun shooting.
On the piece of plywood, we had a pair of screws in the wood that would hold a beer bottle cap against the plywood. We'd crack a beer, place the target, and take to shooting.
We used a piece of electricians 1/2" steel conduit as our blow pipe, framing nails, and 3x5 cards. We'd wrap the framing nail in a cone spun from the 3x5 index card, and taped it to the nail. We'd cut the cone at the same diameter as the pipe. We'd take aim at the bottle cap, and, easily whack it with the dart.
Now days, you can buy bags of plastic cones, and steel darts.
Yep, I can see this as a new direction for this spring, when the squirrels have babies and send them out looking for their own home turf.
Oh yeah,.... you can take an air compressor, and one of those blow off air spraying tools/adaptors, and, you can make the blow gun go hyper-sonic with the compressed air. When we did this, we'd blow through the plywood pretty quick.