Do the horizontal lines each represent hold over for 1k of distance?
Not holdover, AA gunners were taught early on to use tracers to help judge lead before lead adjusting AA sights came about. Spotters would manually input range untill the MK18 for the NAVY bofors. There are factors in the real 40mm reticle to help judge effective range while the horizontal lines are slew lines to help hold a steady slew. Kind of like a visual mental bench rest. The lines are set to know ranges of 1000, 1500 for the wirble since max effective range is 1500. For the osti, 1000, 1500, 2000, 2500. As an aircraft travels at you or past you think in terms of connecting the dots on elevation meaning range while slewing holding that range line and accounting for lead. You do it already in a wirbel by experience, the tracers and guessing speed of the con traveling past.
I tested it tonight since I was trapped by the radar. Killed 7 before my turret was killed and the tanks showed up. If this radar becomes standard I think osti's will become popular becasue you can take down low carpet bombing bombers farther away. I just took the default gunsights for the wirble and osti, pulled horizontal lines at the range ticks. Duplicated those above the center horizontal line once it occured to me how the 40mm Nimrod reticle was used in WW2. Pretty clever way not to need a range spotter. The Hungarian AA illuminated gunsight itself has no elevation input knob like the Hungarian illuminated gunsight for shooting AP tank rounds. That one feature was what helped me understand the slew lines.
