Ihave one in all 3 calibers. 22lr 17 and 22 mag. they are all very accurate, and work flawlessly. Like most guns they need cleaned ocassionally and they will work well. They are 10 round mags in 22lr. and 8 rounders in .17 and .22 mag. In my 22lr I only put 8 in usually and there arent any troubles. Sometimes 10 will work but 8 works better. And in the mag calibers 5 or 6 rounds work the best.