Originally posted by Sorrow[S=A]:
20mm had some jig- but not very common at all. was only a solid core bullet in the cannon too- was mostly for against bomber engienes and better penetration of planes. more common from what i read was to put AP rounds in the MG as these were available more and were more effective especially at close range due to a higher muzzle velocity.
MG 131's nearly always carried a 2/1 ratio of AP (sub core steel) and either an either ICN or HE, but againt the 131 is a lower velocity round with poor ballstics and that AP never did much (it's perfect as it's modeled in AH pretty much)
I was looking around for MG 151 AP sub core steel rounds, they were virtually none exiestant after late 1943 (prolly cause of the allied bombing campaigns

) I've seen no accounts of AP/HE rounds anywhere for any Luftwaffe aircraft cannon...at least not in the term AP as in tank busting.
I guess you could call the normal HE rounds of the MG 151 AP/HE vs a airplane, because even at longer ranges it's prolly going to go through and then explode

A few HE around the engine nacelle of a bomber would do alot better then a few sub core AP's...the HE will most likely rupture fuel lines ultimately ending in a fire that will destory the plane or immedately take it out of action, where as with AP engine will either lose cyclinders or be knocked out.
Not quite as effective I guess, prolly why the LW stuck with HE

- Jig