GrauGeist
Generalfeldmarschall zur Luftschiff Abteilung
Erich posted a good answer regarding your timeline questions, and there was a great (and very informative) thread a while back regarding the Minengeschoß ammunition, you can find it here: 30mm Mine Shell?Point taken, but as I understand it? During the period the OP has specified the 30mm M-shell was very much a "new kid on the block", whereas the 20mm variant was in widespread service. If I'm understanding it correctly (and please "straighten me out" me if I'm off base here), the /U4 mod for the 109G-6 was only just entering service and Bf 110G-2/U9's were (likewise), only starting to reach frontline units for operational testing (ZG76) in the Autumn of 1943?
Fully agreed on the "horror show" factor of one vs. the other. The 2cm was bad enough...the 3cm round was absolutely brutal.
Nothing succeeds like excess.
This discussion also reminds me of a photo I posted some time back, showing a T/E attack on a B-17 with a slashing starboard angle:
It was a Me410 A-1/U4 packing a BK5 50mm hunting a B-17G of the 388BG, seen from the radio/nav compartment aboard the B-17 (note the damage on the B-17's wing)...