The most common and most likely answer to this crossword clue is the 7 letter word DEADEYE
I've seen this crossword clue in The Guardian
D
E
A
D
E
Y
E
More clues leading to the result DEADEYE
- One accurately shoots lifeless London landmark
- Crack marksman departed with detective
- Sharpshooter‘s employed in the rigging
- Great shot has you almost mute at first
- Sharpshooter that’s employed in the rigging
- Accurate tackle?
- Terrific marksman that sees nothing?
- Top marksman killed investigator?
- I’m unlikely to miss leader – naked – sitting in shade
Buddy explains!

The straight part
We know that "Sharpshooter/employed in the rigging" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sharpshooter/employed in the rigging = deadeye.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 DEADEYE mean?
DEADEYE noun- A wooden disk having holes through which the lanyard is passed, used for tightening shrouds.
- A very accurate marksman.
- A penchant for noticing a particular thing, or a person who has such a penchant.
- Very accurate in shooting or throwing.
- (concerning a stare) Cold; unfriendly.