We're sure it's fun to simply build and fire a massive cannon but wouldn't it be better to see what happens after the cannonball is shot? This 7th-grade girl decided to do just that for a science fair project. She and her father wanted to test to see how high the cannonball would go so they ...

We're not sure if there's any reason you'd have to use a 4 gauge shotgun — unless you're trying to kill a tank. But we're glad this guy showed us just what that looks like so we can save ourselves the medical bills. You know things are about to get serious when this guy shakes his head as if ...

Remember the salmon cannon? It's an incredible device that just might singlehandedly save them from the troubles of transversing dams. It also looks a lot like a giant slide for fish - especially in this supercut that looks more like a waterpark for fish than a device meant to save them. It's good ...

Does the teeny tiny cannon actually work? This one's actually pretty simple. Yes. Yes it does. Much like a bullet or a larger cannon (or exactly like both of those) this very small canon fires a pellet thanks to an explosion of a small amount of gunpowder that forces its way out of the chamber, ...

If you've ever shot a potato gun and wondered how awesome the footage would be to shoot a GoPro out of it instead of potatoes, then these guys have your back. Using a homemade potato gun, Sam and Niko fire a a GoPro absolutely insane distances, catching some epic footage in the process. ...