Keep in mind if you try to use this to learn snap shooting of planes flying across your path, the drones are flying slower than fighters in furballs in the MA. In the MA shooting to 200-400, lead with your windscreen uprights even a bit out side of them.
The 100mph principle may be meaningless to you. But, it is why the standard reticle ring diameter in ww2 was roughly 100 -120Mil. As long as the velocity of your round is between a .303 and the NS-37 in the Yak 9T. The 37mm in the P39 and MK108 are too slow for the 100mph principle.
That is why the US and Great Britain used the designation 100mph ring for their standard combat reticles. From 200-400 for every 100mph the target is traveling at, lead him by that many radius of your 100Mil ring or, 50Mil for every 100mph. So for a con in the MA traveling at 300-350 across your front between 200-400yds out. Lead him for 300 by 3 radius of your 100Mil ring or, 350 by four. If you measure it in most fighter cockpits that is about the center of the vertical windscreen bar or just out side of it.
The MK108 needs about twice that lead for those ranges and speeds.