I have been doing some calculations of the trajectory of a 5.56 mm Federal Ammo M855 62 grain round. I am competing in a sniper challenge here in Ohio and they have a 1000 yd shot during this competition. I have never shot my AR-15 at 1000 yds and have a HWS with 3x magnifier with a .5 MOA dot and 65 MOA cirlce so I need to try and figure out the calculations before the competition. I guess what I am asking is if anyone here has any other info on the trajectory of the round I use. I just want to be able to try and calculate the shot.