Now it makes sence why the Iraqies ran, when it was spewing 300 gram depleted uranium projectiles in vast amounts.
One of the most powerful aircraft cannons ever flown, it fires large depleted uranium armor-piercing shells. In the original design, the pilot could switch between two rates of fire: 2,100 or 4,200 rounds per minute; this was changed to a fixed rate of 3,900 rounds per minute. The cannon takes about half a second to come up to speed, so 50 rounds are fired during the first second, 65 or 70 rounds per second thereafter. The gun is accurate enough to place 80% of its shots within a 40-foot (12.4 m) diameter circle from 4,000 feet (1,220 m) while in flight. The GAU-8 is optimized for a slant range of 4,000 feet (1,220 m) with the A-10 in a 30 degree dive.
Holy fuckeroo 
Years ago, when I trained on the Hunter, we were introduced to ground attack techniques using one at a time of the four installed 30mm
Aden cannon. Only once did I get a chance to fire all four simultaneously, with a combined fire rate of 4800+ rpm. I've no idea what the round weight was, but four at once did an impressive amount of damage to the ground targets we used at Garvie Island. The aeroplane lost around 50kts of forward speed per half-second burst, and the cockpit filled with smoke. It was quite exciting, really.
