Well, I know what I want for Christmas, A missile punch at bullet prices. What a marvelous fun toy! Of course, I’d adapt my railgun, also known as a mass driver, to fire pumpkins. There is an annual pumpkin flinging contest that I’d just love to win.
Currently, the state of the art in making pumpkins go ballistic is the air cannon that can propel a pumpkin over 3500 feet. A record I’m sure my railgun could squash.
By the way, the concept of the mass driver was, best I can tell, originated by science fiction author Robert Heinlein in the book, “The Moon Is A Harsh Mistress.”