Kevin, I owned one, it shot everything I had.
There were absolutely no issues when I shot the cheapest .22 LR I could buy. I also shot 500 rounds as fast as I could while reloading the magazine. Again, no failures but my thumb and fingers were sore afterwards. I hope this helps.

22 lr guns are strange I have 2 identical GSG 1911 22lrs 1 will cycleg and work great wit Winchester M22 bulk and the other will not work with it at all. I recommend trying the bulk packs that you can get locally (buy them 1 at a time) until you know what it likes. I have a log of which ammo my 22lr guns will work with and how accurate it is with each type of ammo

Hi Kevin, Yes they will cycle fine once the firearm is broke in

Also most Bulk ammo is not much Cheaper that the cci Mini Mags

22 lr guns are strange I have 2 identical GSG 1911 22lrs 1 will cycleg and work great wit Winchester M22 bulk and the other will not work with it at all. I recommend trying the bulk packs that you can get locally (buy them 1 at a time) until you know what it likes. I have a log of which ammo my 22lr guns will work with and how accurate it is with each type of ammo