[Jon]

Its actually taken from Rolf Pingel's RAF intelligence report after he was downed in a BF109F over England.
He stated he liked the single nose 2cm weapon, though it fired high, and the report then claims the weapon can be cleared of jams in the cockpit by the pilot whilst in combat?

Possibly the Intelligence officer assumed the 151 could be cleared as the breach enters the cockpit area. Remembering the very much "hands on" approach with WW1 aircraft offensive weapons.

Regards

Jon