Genial copy, forming moving target (4,6)
I believe the answer is:
clay pigeon
'moving target' is the definition.
(target for clay pigeon shooting)
'genial copy forming' is the wordplay.
'forming' is an anagram indicator.
'genial'+'copy'='genialcopy'
'genialcopy' anagrammed gives 'CLAY-PIGEON'.
(Other definitions for clay pigeon that I've seen before include "hard bird to shoot?" , "Disc fired into the air as target for shooting" , "target of gunmen" , "Trap shooting target" , "Moving target" .)