Ok, so they were wrong how they taught this in WW2. I didn't know we threw all that into the garbage with this game. Even if the game physics looks to be faithfully based on it.
But, then the K14 could only be used for low E turns, while the con was kept in the view arc out to 800yds limited by the glass reflector plate's edges and corners .
In reality the rings work. I've built gun sights with them statically over set to test Lead like you see in all of these pictures. The perspective remains constant just like a low E 20 degree to line of travel at 300 lines up like at 600. "Similar Triangles." Mostly the elevation for the rounds change to account for the range difference if the relative vectors remain the same during the bullet travel time. Low E 20 degree to your line of travel.
Practice will always be needed to become proficient. Especially with a defined ruler of scale and perspective. 100Mil ring at all distances.
It gives the uninitiated new player something more tangible than a small green cross and mapping the screen capture to their trigger if they ever in all their game career figure that out, or anyone bothers to tell them . Which is how I took the screen captures for this Wish.
Here "Bag the Hun" issued to all British fighter pilots and interested AAF pilots to learn Lead using the MKII\Mk8. When you start the download, kill the two popup windows. You don't want what they is selling.
"Bag the Hun" Download: http://www63.zippyshare.com/v/87394583/file.htmlThe allies taught lead past 20 degrees in rings of hold off starting at the center dot of the reticle. The edge of the 100Mil ring was a half ring hold off or 50Mil. If the Low E angle was at 20 degrees or inside of 20 degrees your hold off was AAF\NAVY Mils or division of the ring. British taught 5, 10, 15, 20 degress to the line of travel as in "Bag the Hun".
The Germans and to a degree the VVS used fractions of the ring based on those tick marks that divide the Revi 100Mil ring in 6ths. Ever wonder why there was three 6ths more defined by 3 additional tick marks past the edge of the ring in the cardinal directions? The maximum lead before E caused you to shoot behind the con and for longer range hold off Lead.
That's why when the NAVY hastily procured N-2 gunsights right after Pearl Harbor, which had only a vertical line with 3 horizontal lines as a simple ranging reticle. They upgraded their own modified reticle of a 35Mil ring and dot or 1 Rad into them to give Wildcat pilots some ability to judge lead. The ability to judge lead against highly maneuverable Japanese fighters was the reason for the blanket adoption of the Mk8 with it's 100Mil and 50Mil rings. To judge lead shooting visa angle of travel relative to line of travel ring divisions and by rings hold off for snap shots.
Here is the comparison K14 gyroscopic precession hold off vectors versus adopting a 100Mil active ring option into the offline LCG to measure lead by rings as the NAVY, AAF, and British taught.
If you compare my previous picture's gunsights to the 6-star vector hold offs visa gyroscopic precession. You will notice my lines follow those vectors since we don't really have an active K14 gunsight in the game.
P51D 400- Low E 20 degree, K14 6-star and LCG ring\6-star. 
P51D 400- reaching limit of Low E past 20 degree, 6-star and LCG ring\6-star.
A20 800- Low E turn high angle dive, K14 6-star, LCG ring\6-star. Two ring lead possibilities. 

