Walmart has the Rossi .22/.410 combo for under 140$ single shot. I bought this for my daughter, she started off with the CB shorts from CCI and they are super quiet. It has fired every .22 round we have thrown at it. Nice little single shot rifle. Plus you get the .410 barrel with it also. Hope this helps.
If you get the Rossi I found a scope mount for it. By rossi, but I had to cut it a little (it was too long). The open sights are accurate though. If you need the mount and can't find one just give me a shout.