S!
Here is a link to an official "Horrido - Des Jägers Schiessfibel" shooting manual approved by Galland. It's in german, and has humorous depiction of things
http://rafiger.de/Homepage/Literatur/Schiessfibel.pdf
And finnish translation here:
http://www.virtualpilots.fi/hist/WW2...mpumaopas.html
Pages 9 and 10 are most informative. Basically contains what Blackdog already said.
-LLv34_Untamo