Well did some shooting and sighting in the daughter's gun.started out with 90 grn of blackhorn behind 250 shockwave.group wasnt to bad,2 1/2 at 100 yds.bumped up to 100 grns.group opened up some so i dropped down to 80 grns.the group shrank down to 1 1/2 at 100 yds. backed the target out to 200 yds and aimed right at the top edge of a paper plate.Had a 5 shot 4 1/2 inch group on the bottom edge of the plate.I would post pics of the groups but cant find my cable to hook the camera to the puter to down load.when I find it i'll download and post.By the way the Remington STS primers I'm using,worked great.fired 25 shots and no misfires