A ball chain loaded inside a shotgun shell is quite an interesting idea.
What happens when you home brew a shotgun shell to contain 18 inches of ball chain inside?
We are familiar with ball chains from necklaces and pull strings for lights. This is the weaponized version of that.
The results against a watermelon are quite impressive.
This unsuspecting innocent watermelon has a really bad day. This ball chain hits and explodes the big melon with great force.