I know all about sights... that's one reason I am kind of moving towards 1X scopes on my rifles. They are no optic advantage but they are an aiming advantage, and my targets are showing that. Like you, I have bifocals, and to focus on the rear sight, and then the target, and hold all that together... well the scope seems to work better because I can look past the cross hairs while still keeping them in focus...

That Shockey Gold is an intersting power, but I shot enough of the APP that I think I will watch others shoot it instead of me...

Keep shooting ... how do you like that big hole a .58 makes?