I have two broesighters. A Trashco Shot Saver and a BSA. Truthfully they aren't worth the money.They might get you on the paper but that's about it.Example I boresighted a rifle. When I got to the range I went right to 100 yards.This was approx a 2.5'sq cardboard with the target stapled to it.I barely hit the top left of the cardboard.I brought it to the 50 yard mark. After several shots I tuned it in.I would not buy another boresighter.Set your taget up at 25 or 50 yards and move it from there.What you save on the boresighter will buy you a couple boxes of ammo.Others might disagree but that is my Honest Opinion.

Ruger Redhawk