I don't think the video does a good job of replicating the shotgun falling muzzle first. He was hitting the stock, which is more like a fall that's stock down. Think of the inertia of the firing pin - when hitting the back of the stock, the firing pin stays put while the gun goes forward - this would not strike the primer.An 870 will not. I think I proved that in the video I made that Plumer Roy posted. So for those of you who have stated an 870 can discharge without the trigger being pulled please explain why neither I nor Remington can duplicate an 870 discharging with out the trigger being pulled and the safety off? Remington tried to duplicate it in more ways then I did and could not cause a discharge. They also had an independant testing firm try to cause an 870 to discharge without the trigger being pulled and they could not.
I shot that video several times so that 870 was beaten way more then what you saw in that video. Yet, no discharge. Case closed.
I don't think the video does a good job of replicating the shotgun falling muzzle first. He was hitting the stock, which is more like a fall that's stock down. Think of the inertia of the firing pin - when hitting the back of the stock, the firing pin stays put while the gun goes forward - this would not strike the primer.
I want to see this test done by striking the muzzle...
Hitting the stock? Yes, and beating the receiver so hard the trigger pins where coming out of the receiver. So it proved the lock up is secure and the only way to cause an 870 to discharge is to pull the trigger.