I believe the dickens 5” guns are more accurate. It seems so for me, maybe it is because I have to wait for reload so I take more time aiming. Not knowing your screen resolution and size as well as field of view makes this one iffy. I have an untra wide curved (beyond 9:16, its like 9:21. If the plane is 2k and closer, I lead by about an inch no elevation or very little. 5 k out about two inches lead 1/2” high. 10 k out 4 inches plus angle elevation that is all over the place and like others said, mostly luck! Be advised for low incoming buffs, the 40 millimeters are devastating. Just let him fly into your bullet stream. One last thing, I elevate all the way up from the gun sight (saved posion) and use the center of my screen as a reference. You can see more that way! Good luck!