Nordman,, you will simply have to try different ammo to get your gun to cycle right, take a set of callipers to 22 rounds and you will find they are all significantly different in size. You will have to find what your gun likes and what it doesn't. No 22 ammo is crap as the worst in some guns shoots the best in others. CCI's may serve you well. the tips are smooth so they feed easy and they are often a little zippier than others making the slide cycle better. Federal american eagle 400 round bricks have known to be consistent rounds for your needs