Review on Accurately Sight In Your Shotgun With The Sightmark Red Laser Boresight by Brian Cruz

I found that this works quite well in my Rossi 12 gauge single shot.I used it to sight in AR style sights and a red dot from UTG. I haven't had extensive range time to fine tune my sights, but quick initial adjustments with it proved pretty accurate at the range.It can be a little awkward to use, but I have had no problems with it.UPDATE: After a few runs at the range, I examined this a bit more closely, and found that orientation makes difference. The laser apparently does not center very well in the barrel, and rotating the unit in the gun resulted in significant differences in dot placement, even at 25 yards.I ended up using a permanent marker to put an arrow on the back so that I can orient the lase the same way every time I use it. This should give more consistent results.