The most common and most likely answer to this crossword clue is the 5 letter word SALVO
I've seen this crossword clue in Independent
S
A
L
V
O
More clues leading to the result SALVO
- Burst ball seen after Slav fouled
- Girl, see, with ball that’s burst
- Verse in artistic gathering releasing new attack
- Burst lotion almost beginning to ooze
- Burst of hail almost over
- Leaders of soldiers always like volley of concentrated fire
- Portuguese saint riddled with 55 shots
- A part of reprisal volley?
- Organised discharge of colossal volume
- Volley of colossal volume
Buddy explains!

The straight part
We know that "A part of reprisal volley?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a part of reprisal volley? = salvo.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SALVO mean?
SALVO noun- An exception; a reservation; an excuse.
- A concentrated fire from pieces of artillery, as in endeavoring to make a break in a fortification; a volley.
- A salute paid by a simultaneous, or nearly simultaneous, firing of a number of cannon.
- (by extension) Any volley, as in an argument or debate.
- The combined cheers of a crowd.
- To discharge weapons in a salvo.