10-20% have light strikes - Federal Premium Champion Training - Rimfire .22 Long Rifle 40 Grain Lead Round Nose Rimfire Ammunition

When I shoot this ammo from a semi-auto, I have light primer strikes about 1 out of every 5-10 rounds. Basically, the round fires, but does not explode forcefully enough to chamber the next round! The gunshot sound of a light primer strike is also distinct and not as loud. This interrupts the shooting session by requiring manual chamber cycling and then having to decide what to do with the ejected live round. I have used several other brands of ammo and never had this light primer strike issue, only with these 325 round Federal "Automatch" boxes. For this reason I will not purchase this type of ammo again.
The good part about this ammo is that the ammo feeds cleanly, fires very cleanly, which leaves very little residue on magazines in the chamber+barrel compared to say blazer ammo.