In 2009 I took a break from deer hunting to run a magazine of various 22LR ammo through a Calico M100. Turns out the Calico did not like some of the ammo. The Federal 22 ammo I used was some pretty low end (way less than $10 per brick). After I tried it in the Calico I remembered why I had it lying around. Turns out none of my 22 autoloading guns will run this stuff. Some editing was done to keep it under 10 minutes and clearing jams. All in all the Calico shoots great as long as you use High Velocity ammo.