I have often wondered what is the most common cause for fliers in 22 rimfires, I guess ammo causes them but I am thinking there has to be other reasons. I have been shooting quite a few USBR targets and can be going along just fine then all of a sudden a round will drop low at 6 or 7 o clock, next shots are back where they should be, ammo was Center X, rifle is a Anschutz 54 Sporter , I guess it maybe me as well, this happens 2 or 3 shots out of 25 usually, thoughts anyone?