[Spaceships] Conventional and EM Gun ranges in atmosphere?

[Anthony]

Originally Posted by vicky_molokh

Thanks. Seems in the right ballpark - a jet-mounted 30mm autocannon in one of the Pyramids has roughly twice the ½D of your calculation. I was just unsure with what it should scale, and with what it shouldn't. E.g. higher-speed bullets from ETC, LP, Gauss and Grav guns seem to have greater ranges than conventional ones.

Realistically, they shouldn't unless they have bullets with different ballistic properties or computed range is comparable to maximum vacuum range (for a 1 km/sec bullet, about 100 km at 1G).