The Minengeschoß (Mine-Geschos) (Mine Shell) was made by drawn steel (the same way brass cartridges are made) instead of being forged and machined as was the usual practice for cannon shells...
This resulted in a shell with a thin but strong wall, which hence had a much larger cavity in which to pack a much larger explosive or incendiary charge than was otherwise possible.... The incendiary rounds were also often fitted with a hydrostatic fuse, which detonated when it came in contact with liquid....
This was to ensure that the round did not merely explode on the target aircraft's skin (which would cause little damage), but instead penetrated it and exploded when it came into contact with fuel or coolant inside the fuel tanks or radiators respectively.....
View: https://www.youtube.com/watch?v=sZZGaEEi8Ek
Ive included the Handbook/Manual German Proving Ground Rechlin 1943 in pdf form at the botton....
Cartridges, color codes, projectiles, cases, primers, fuzes.... Helps if u read Germanic.......
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Minengeschoss ausf A:
Basic HE ammo, 330 grams bullet carring no less than 85 grams of nitropenta explosive content, to make some comparative a standar stick grenade carry 115 grams of explosive. Impact nose fuse AZ 1587.
Minengeschoss ausf A m-Zerleger:
Like the earlier but with a self destruction device wich actuated after 3 seconds, green band on bullet.
3cm Brandgranate-patrone:
Filled with a incendiary bursting charge Ph Mg of 140 grams, 490 m/s initial speed
Minengeschoss Ausf C L-spur:
He-tracer improved, the ausf C ammo was a streamlined desing in order to achieve a more straight flying path. The ausf C carried a litle less explosive filling, about 72 grams. The base of the projectile allowed a traced element .The muzzle speed was 510 m/s.
Minengeschoss Ausf c glimmspur:
Same as avobe described, but a with a dimmer, non smoke tracer for low light/ night shooting.
Minengeschoss Ausf c glimmspur M -zerleger:
Same as above but with self destruction. Very much used for the Night fighters in Reichs defense.
Thanks to Panzerknacker