One of the best things about minecraft is the ability to create anything you can imagine. It's also cool that you can launch fireballs all over your world. Watch this video to learn how to build a fire cannon in Minecraft.
This tutorial shows you how to easily find an accurate range for your cannons when you're playing Minecraft. Calibrate your cannons just so, to make sure you score a hit every time you fire them. Works with short range and long range cannons both.