So after the ammo jam issues when I used Winchester Super X in my Walther P22 I tried a hundred rounds of CCI Stinger ammo because I was unable to find the CCI Mini mags anywhere. Worked like a champ! Not one jam or failure to fire at all with 100 rounds of CCI stingers woohoo! I admit it was quite snappy with a wee bit of smoke like others had experienced but I nailed a dozen sweet bullseye shoots from between 25-75 yards so very impressive accurate pistol! One guy was surprised at how loud of a gun the P22 is for a 22 pistol.