I always thought it wasn't necessary but I have since changed my opinion. I bought a scope alignment kit the other day just for something to do. When I checked the alignment of the scope rings on one of my rifles, I noticed they were pretty out of alignment. I had to lap the rings for close to an hour to get to points to line up. I was just wondering how many people lap the rings when they mount a scope on a new rifle. If not, how many people even check alignment?