The most common and most likely answer to this crossword clue is the 5 letter word SEPIA
I've seen this crossword clue in The Times
S
E
P
I
A
More clues leading to the result SEPIA
- Brown pigment, one in copies drawn up
- Brownish shade I included in copies, on reflection
- I brought in copies done over in shade of brown
- Reddish-brown colour one's seen in mushy peas
- Shade encountered in Milanese piazzas
- Brown as pie in the cooking?
- Those finishing turkeys imbibe top Asti then a shot
- Just over three entering water that's brown
- Reddish-brown start to autumn, in two different ways
- Pigment sounds more likely to ooze
Buddy explains!

The straight part
We know that "shot" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shot = sepia.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 SEPIA mean?
SEPIA noun- A dark brown pigment made from the secretions of the cuttlefish.
- A dark, slightly reddish, brown colour.
- (by extension) A sepia-coloured drawing or photograph.
- The cuttlefish.
- (colour) Of a dark reddish-brown colour.