In WW1 the Germans had a Varity of explosive rounds for MG’s used in Zeppelins and airplanes
Would like to show a few of them.
This one is called the “Lufteinschießpatrone” After firing the air pressed a spring held primer against a pin who ignited a fixed time delay who let explode the black powder charge inside the bullet.
It was made for letting a pilot know were his MG bullets went by air battles during WW1.
Later the tracer was developed.
(For an exact explanation see page 18/19 of the German 7,9 military ammunition book of Kent)
This one is called a “Brandgeschoss” in Kents book; cartridge with a conical point (see page 24) unfortunately I cannot show you a cut.
This one is called the “Alder Patrone”. A very complicated bullet. After firing a sleeve get pushed back by the barrel, after the bullet leaves the barrel two half rings fall of, and the bullet is armed. If the tip of the bullet hit something, it will explode.
(For an exact explanation see page 26/27 of the German 7,9 military ammunition book of Kent)
This one is called the “Eisenach Sprengpatrone” The cartridge has a tombak bullet and you can identify it on the head stamp of the “Gewehr Prufüngs Kommission”. This one has a red annulus color in stead of the normal black one as used on the Spr.
(For an exact explanation see page 29/30 of the German 7,9 military ammunition book of Kent)