Victor loses his head, but makes a pretty good shot (5)
I believe the answer is:
inner
'a pretty good shot' is the definition.
(I've seen this before)
'victor loses his head' is the wordplay.
'victor' becomes 'winner' (synonyms).
'loses his head' means to remove the first letter.
'winner' with its first letter taken off is 'INNER'.
'but makes' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for inner that I've seen before include "Target next to bull" , "Target area" , "Central, internal" , "Part of the target near the bull'seye" , "Located inside" .)