I have lost track of the sources of the files but
i thought these files would go well with the pistol
and also the single barrel shotgun.

Before overwriting the files make sure you BACK UP the
below two mentioned files.

place the rifle sound file in
Sauerbraten\packages\sounds\awesund

and the pistol file in
Sauerbraten\packages\sounds\free

Tell me what u think of the pistol sound.

Anyways enjoy.