I've posted this before, but when I got my Anschutz 64, I tried to go on practice shooting with ordinary .22 bulk ammo, intending to save the better quality stuff for when I was shooting that particular rifle well. That plan was defeated, however, because the tight tolerances of the Anschutz meant that the rather carelessly produced brass on the 333 or whatever meant that the cases would not always extract after firing and I found myself tapping them out with a cleaning rod 'way too often. Experienced .22 precision shooters soon set me right. There are less expensive brands that will shoot in my rifle just fine and I don't have to buy Tenex for practice sessions- just when I want to shoot to my full potential, such as it is.