Gunery or Gunnery: How To spell?
The word Gunery is misspelled against Gunnery, a noun meaning "That branch of military science which comprehends the theory of projectiles, and the manner of constructing and using ordnance."
Gunnery has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings gu & ery which should not be misspelled with single 'N'
Wrong Spelling:  gu-n-ery  Correct Spelling:  gu-nn-ery 
Check more misspelled words of Gunnery to spell it correct.