Do big ones possess more fire-power? (5)

I believe the answer is:
shots
'ones possess more fire-power?' is the definition.
I can't judge whether this defines the answer.
'do big' is the wordplay.
I cannot really understand how this works, but
'big' could be 'hot' (both can mean popular or trendy) and 'hot' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for shots that I've seen before include "Gunfire -- attempts" , "See 2" .)
