I shoot premiums because I'm always looking for "keyhole" patterns when I'm practicing/sighting in (out to 300-400yds). I figure, if I can achieve this when relaxed, I can acheive similar when my heart is racing and shaking like leak when the "big" one steps out. The Premiums have been the only ones that have been able to produce the same results time and time again. But, I'm concerned about the past two shots.