Graybeard
What do you do with a fine revolver, that won't shoot to point of aim for you? And, why is it, one must pay someone else to tweak a gun to get it to hit where they are pointing?
I have a friend whom I refer to as a human Ramsom rest. He's left handed. When he picks up a gun that I've regulated to hit point of aim for me, whether fixed or adjustable sights, he hits to the right of my point of aim and there are few people alive who I believe could outshoot him. Likewise, when I pick up a firearm that he has regulated to hit POA for him, I hit to the left, being right handed.
You can say baloney all you want. It doesn't change the incontrovertable fact that the mechanics of the hand-held firearm, mated to the skeleton, supported by the muscles or the arm, will cause a firearm to strike to different points of impact for different people, with different hand sizes, different handedness, different stances, different muscle mass etc! One gun cannot be manufactured, that will magically group around the sights when fired in anything but a mechanical rest. Once removed from that rest, all bets are off. Some "sighting" is generally going to have to be made. Of course, adjustable sights make that a simpler task. How many adjustable sighted pistols do you have, in which the rear sight is absolutely centered on the topstrap?
By the way, as an aside, perhaps I've mistaken you for someone else, but haven't you stated on this forum to the effect that you are not particularly a fan of Ruger firearms? I'm trying to recall whether it was you or someone else who has had a significant run of bad luck with Rugers.
Dan