As for shooting at the pilots hanging on his chute...it happened on both sides. During the battle over my born town on Aug 29, 1944, the Germans were shooting on the bomber crew members while descending to the ground. One of them was even injured on his arm. It´s written in their statements and also confirmed by several (Czech) eye witnesses who saw it from the ground.
One of the Germans even shoot at the young Czech boys who were trying to get closer to the crash site of one of downed B-17s. Then he landed at the closest airfield ,toke a motorbike and drove t the crash site. To take the pics there. When he saw those young boys he said that he was shooting at them as he thought their white shirts are the parchute...
The local photographer toke few pics of him at the crash site and hid the copies of them for the future.
Here they are
FalkeEins - the Luftwaffe blog: unidentified Jagdflieger - B-17 shoot-down on 29 August 1944
On the other side there were also cases when Allied pilots shot at the Germans hanging under the chute. Willi Reschke´s statement from Aug 24, 1944 perhaps comes to my mind.
From a human point of view it´s something very bad. But should I be in shoes of a pilot whose comrade was killed under the chute who knows what would I do during my next mission...war is a hell.
Btw, when I spoke about it with Willi Reschke he told me that it was strictly forbidden in his unit to shoot at the pilots under the chute. And should something like this happen, the pilot would immediately be eliminated from the 'team'.
But sorry Jay, I´m not answering your question...