Two come to mind, A Fox SXS in 16g first time duck hunting, had "chopper" mitts on, touched off both triggers/barrels. Went over backwards in the boat.. Did get the duck I was shooting at.. Was black and blue for weeks and did not want to shoot that Fox again. Second is my first deer rifle, a Bishop stocked 98K Mauser in 8X57. Must be the stock fit, but that SOB hurts every time..