The Collaborative International Dictionary of English v.0.48:

Unshot \Un*shot"\, v. t. [1st pref. un- + shot.]
   To remove the shot from, as from a shotted gun; to unload.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Unshot \Un*shot"\, a. [Pref. un- + shot.]
   Not hit by a shot; also, not discharged or fired off.
   [1913 Webster]