Waste of money, shells and time - Bushnell Laser Boresighter w/ Arbors

Saved your money on the purchase and on the spent cartridges which are well off the paper. For starters, the instruction booklet was made for Liliputians...it couldn't possibly be smaller and a magnifying glass is needed to read it. The barrel inserts are not marked so one doesn't know hoe forceful to be when inserting for fit. I set it up exactly per directions and after manually sighting I found I was off paper by 2 feet at 50 yds. Ugh. Each time I removed and reinserted the laser it repositioned differently...just not worth the aggravation. I took a naked shot at 25 yards, was left and high...two shots later perfect zero with my 30-30. This Bushnell junk is just that...a junker.