So here is the deal. My step son who is getting ready to turn 8 had a few issues with talking too much in class. He has been punished and told that his behavior has good and bad consequences. I told him if he got 30 good days in a row he could get a new pistol. He has a 17HMR rifle, and a Ruger single six that we use for trapping. He has wanted a 22 lr pistol to practice with his mom and I when we are practicing for IDPA and USPSA. He is a big kid for his age. The only 22lr pistol I have ever owned is a Ruger 22/45 and Mark III. I am looking at the SIG mosquito, SR22, Walther P22, and similar style pistols. I know a lot of 22s have issues with certain ammo ect. What are your experiences with these?