Here I will post hold over/under charts for common carbine calibers. The point here is so that users can stretch the range on SBRs, submachine guns, pistols, and carbines. For more information on muzzle velocities out of various barrel lengths, check out Ballistics By The Inch. Of course, I modeled the trajectories in Sendit Ballistics.
9mm, 16″ Barrel
This chart is for a 124gr 9mm fired out of a 16″ barrel. The zero is 25, with re-zero at 80 meters.
5.56mm, XM193, 16″ Barrel
This chart is for a 55gr 5.56 fired out of a 16″ barrel. I used a 30 meter zero, because it re-zeros at 300 meters.
Check out Sendit Ballistics for iOS if you are interested in an accurate, simple bullet trajectory calculator. I keep an updated page on the app here. The app is so accurate because it models the most important 3 degrees of freedom with painstaking detail. The app is designed for the field user, with a simple interface, range card mode, low light mode, and rapid corrections with minimal information. It is free to 400 meters, and only $4.99 to infinity.