Daryl I think you are correct. These regulation attempts were usually by companies that had been successful makers of shotguns. The use of lasers is common in the regulating of double barreled shotguns, and for that purpose it works well. This is because all that is needed is to make one barrel’s 30 inch pattern more or less superimpose over the other barrel’s 30 inch pattern at 30 yds. This was the problem with the Winchester Japanese made Over/Under double rifles, they assumed that a laser finding the center of a 30 inch target at 50 yds or 100 yds would make a double rifle shoot that way. So! They placed the barrel sets in a jig and aimed lasers on a target at those distances, and went ahead and hard brazed them in place finished them and put the in the box and shipped them. As we know that didn’t work well.

I don’t think anyone would want a double rifle that shot some place into a 30 inch target at 100 yds.

Almost all makers use the laser to get an educated guess as to a starting point, then turn the rifle over to a real regulator to do his magic. Nothing short of this will work. Sabatti tried that and when it didn’t work too well on most of their rifles they tried to adjust it with a moto-tool and we know how that turned out as well.