I forgot to mention that the 500/465 that doubled turned out NOT to be due to my friend "touching"
the rear trigger on recoil but a very worn sear (with probably some bad gunsmithing to boot).

It was the first (and ONLY time) I didn't give a new gun to my gunsmith to strip, clean, check and set the
triggers (5 lbs front, 6lbs rear) BEFORE I shoot the gun or take it out hunting.

It just prooved the point of why I give him guns to check.

500 Nitro