Red Leg -
Welcome to the board!
I agree with you, if folks would pay attention to training and what they are SUPPOSED to do, these accidents would never happen. As Mark Twain said, "common sense isn't as common as it's cracked up to be."
I had 6 wonderful months at the Comanchee County Cannon Cocker College in 1972. We were ALWAYS warned (155 SP) that the breech recoiled from 36 to 42" and DON'T get behind it!