Thankfully, the weather was quite nice that day, so I raced to my local gun range to get an initial 50 yard zero. After I walked in the zero with just three single shots, I setup to shoot a 10-shot group at 50 yards to confirm that the rifle was zeroed properly with my ADI .22...
Even when using math to figure out what the values are according to various factors like sight radius, it still requires live rounds to confirm zero. You must also consider what is the best zero distance for an AR-15. Very popular distances are the 36/300 and the 50/200-yard zeros. ...