Well, never a gun intentionally pulled on me. However, thru years of hunting and shooting, I've had a few scary incidents that were frightening enough.
A gal was being encouraged to shoot a 30-06 and she really didn't want to. Her boyfriend kept encouraging her to raise the rifle and shoot. I was standing behind the firing line to her right when she turned completely around to her right with rifle at waist lever, WITH HER FINGER ON THE TRIGGER, pointing the rifle directly AT ME, and said "no, I can't".
I said nothing, they left, and I continued shooting. Had just returned from Viet Nam and was, apparantly, conditioned so it didnt seem as bad at the time as it does in retrospect.