You can also just draw an + on a piece of cardboard or plywood and set it level either on a stake or against a wall.
Level the rifle, install the scope and match the crosshairs to the +.
I like simple.
I do too, the kiss system was created for guys like me and maybe you.
I was only joking on my prior post, but it seems that didn't register well.
I think a valid question is that since were talking about the center of the scope, or the + as you termed it as the aiming point, then how much actual error is involved if the reticle appears correct, but is actually slightly off even at say 1000 yds which is in fact much further than most guys will ever shoot at an animal?
And how would we know for sure if a shot was off, that it was caused by scope alignment issues, wind, an unseen tree branch, or even in a remote case, maybe just shooter error?
What is the remedy for any of that?
I'm from the school of send more lead asap, and talk about what might have happened later.
As for torque drivers for tightening ring screws, it was never necessary until recently and the influx of cheap scopes having thinner tubes. And I know some of them aren't cheap as for cost.