That one, at least, is perfectly possible. Explosive tank shells have a problem in that the shock they receive from being fired is more than enough to cause the shell to explode. That’s not a good thing. To overcome that most shells have a primer that is set by the force of being fired. Before that primer is set the shell can’t explode no matter what. After it’s set the shell will explode when it strikes something solid.
So if you shove a rock down a tank barrel the shell is primed at firing. When it meets the rock the shell then explodes.
Note that this has nothing whatsoever to do with pressure building up in the barrel. The explosion is caused by the shell itself exploding when it meets a solid object, something that it is carefully designed to do. You could achieve a similar result by having the rock just *outside *the barrel where there is no way for gas pressures to build up. The shell is simply designed to explode when it hits something solid. Normally this should be a building, a vehicle or something similar. Unfortunately the shell doesn’t know the difference between a rock in the barrel and a building 100 metres away.
I’m still stuck on this Mythbusters test. I really gotta see that episode.
Here’s a couple of rifles being blown apart by obstructions. I don’t know anything about the first, but the second supposedly happened after the guy left a laser boresight in the rifle (it’s basically a laser that you stick in the barrel for sighting purposes and should obviously be removed before firing).
I’ve seen this happen once and I’ve seen another where it did basically the same thing in the middle except both ends of the barrel were intact. In the second case, the stock was shattered but the shooter was somehow unharmed.
I have no idea how Mythbusters welded a steel spike into a shotgun barrel and shot it out with only minor damage and I doubt a finger would do this, but obstructions do blow up barrels.
That would be the slide.
And I’d think trying to fiddle with it could be dangerous, since the gun can still fire once if you’re not pulling/pushing the slide all the way back. The shot might not be at full power if the ejector port is partially uncovered as gas will escape that way instead of pushing the bullet forward, but you’d still end up shot some.
Safer to control the hammer (for non gun-nuts, that’s the thingy the hero always pulls back with his thumb to let the bad guys know he’s serious). If you’re holding the hammer in place, the gunman can pull the trigger all he wants, that gun isn’t going off.
Oh, and I wouldn’t call Krav Maga a “self-defense style”. It’s more of an interpretative dance where the concept you’re interpreting is “SCREW YOU” :D.
