If you had to rely on one zero, what would it be?
For a long time, the mantra has been that the 50 / 200 yard zero (which are not truly the same mind you) is the most useful zero for the AR15 platform as the flat trajectory allows near point of aim / point of impact to nearly 200 yards. It’s vanilla advice, and vanilla pretty much suits anyone, but each would individual would benefit from exploring the benefits of the different zero’s as it relates to his or her rifle.
Many of you might have heard of the maximum point blank range method of zeroing. It encompasses a single zero where the projectile is set to a zero that keeps it afloat in a defined vertical zone / arch to match the largest diameter of a target that you want to shoot. As an example, if the vital zone I want to shoot is six inches in diameter, I would zero the bullet path to arch 3 inches high and when it drops 3 inches below my line of site… that is the end of my maximum point blank range…read more
Source:: The New Rifleman