I've never had the benefit of the alighnment tool. I use a solid piece of S.S. bar stock 12"X1", wrap it with 180 grit, tighten down the rings enough to give resistance when I turn the bar, lap for about 1 minute (its mostly by feel), take the rings apart and usually find I've removed about 30%-40% of the paint inside the rings, and in area's where the paint is still remaining it will show wear from the lapping. That is my guide to know when to quit. When you can see the whole inside surface will be touching the scope tube.
But again, for $20 bucks I dont have to worry about causing cant as I tighten down the rings, dont have lap rings at all, boresight, proper torque on the screws, any of it. I just mount the rings on the base where I want them, show them where I want the scope placed in the rings, and BassPro takes care of the rest while I take my kid to look at the giant fish tank. Just might be the ticket!
As far as Smurf's... I've seen a video of Azriel and Gargamel that would perminately warp the mind of every child in the world who saw it. NO, I dont know what the link to it is.
