Originally posted by Saxman
I do wonder how round visibility compares with the US .50cal API round, as opposed to the standard ball.
Well, I'm starting to go outside of my breadth of knowledge here, but from what I understand, the tracers loaded were standard .50 cal tracer, and the API was not a tracer round. Therefore, the API should "look" the same as a ball round. So, for example, a 5 and 1 load of API would still only have the tracer round as the visibile round.
I've never seen API fired on a M2; however, I have seen 20mm HEI fired from a Cobra, 20mm (F-16/18), 25mm (AV8), 30mm (A10) HE, and whatever the AC-130 40mm round is (some sort of anti-personnel round?), fired from fixed wing and you don't see them until impact.