It sounds like you have more information that could help work out what you are looking for. How were these guns lost, what aeroplane?
Thanks for the reply. FE2b 6992, No 11 Squadron, 13 Wing. Shot down 10th Oct 1916 NE of Bapaume, Somme.
"Confusion" has crept into some records and actuality points towards this 'plane having been a victim of Oswald Boelcke of Jasta 2.
regards - 6992