Picked up a couple of 50 rnd boxes of Federal AE .22 at Bass Pro a few days ago. Took a Llama .22 XV I just bought last week, out to shoot. I'm aware that these pistols are extremely ammunition sensitive, and function best with high velocity ammo. This crap ammo would not even cycle the slide! Had to hand rack it each shot. Tried another mag full, with a different mag, same thing. Kind of bummed...figured the gun had a problem. Then, I loaded the 2 mags up with CCI MiniMags..and blasted through both mags with no problem!!! Bear in mind this is a simple blow back design. I move AE .22 " High Velocity" to the top of the list as GARBAGE ammo, right with Remington Thunderbolt.