Ruger 10-22 is a simple and accurate weapon and it takes a 25 round magazine. A great starter gun. Its a lot of fun to shoot. We love ours.
Even a Glenfield or Marlin semi-auto is a good plinker. One of my favorites was the Marlin Model 75C. I have a Marlin Model 700 here with me now. The 75C has tube mag. Model 700, box mag. Easily found at a gunshow for $100. Those are both carbines. The full size version is the Glenfield Model 60. Much more common.
I also have a 10-22 and definitely agree that it's one very reliable rifle. My 10 year old son shot the crap out of it at the cabin last weekend..
I killed a lot of squirrel and rabbit with that 75C...