GT-40 GUY
Gone But Not Forgotten
Bore sight by looking down the barrel first then make your first shot.
Works on anything you can see down the bore with a fixed barrel. I.E. AR rifles.I still do on bolt actions and single shots
I have one of those that I use for guns I can't look down the bore. However, mine is a BSA and it has never built confidence with me.that will work but I sure do like my leupold magnetic boresighter.