Steve,
I have two of the pellet guns and one of the BB repeaters like Mike mentioned. One of the pellet guns shoots six shots as fast as I can pull the trigger and I have shot this dam dog so many times I am now to the point of using my 22 Magnum or the 9MM on him. The people that own him just let him run loose and I have had the animal control pick him up at least 10 times and they get mad and go bring the barking son of a bit## back and it all starts over. These two dogs here take stupidity to new levels. When I shoot him with the pellet gun, he just whirls around and around trying to see who hit him. Some time back they ran him out of their yard as he was about to crap and he came over here and did it. I took a shovel and picked it up and took it back across the street and threw it at the three of them and told them it was theirs and to keep that dam mutt home and quiet. The neighbor that lives right next to them really got mad as he had new carpet put in and they ran the dog over to his driveway to crap, and his daughter stepped in it and tracked it in onto his brand new carpet. That dog is the worst I have ever seen and he will bark like yours for hours at nothing. I can't wait to get that unit and see what he does. He is so dam stupid he will most likely bark and then try to figure out why his ears hurt.
Ron