Originally Posted by ArcticFox1984
Or just like... buy a laser bore sight and a caliper.
Measure the distance from center barrel to center optic.
Calculate 90% of the above, and draw it out on a piece of paper.
adjust your sight so that the laser and reticule meet your marks at 10ft.
This will roughly range in your sight for 100ft.
From there you can fine tune the adjustment at your first game.
This is the correct answer.