Prepare to shoot what may be shot (4)

I believe the answer is:

load

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'shot' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for load that I've seen before include "pack" , "Burden, onus" , "that's put on commercial vehicle" , "Great quantity" , "Charge a gun" .)

I've seen this clue in the Evening Standard.

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