I know what I'd be totin'..

In a post he links to here, David Codrea asks, "What caliber for T-rex?"
That's an easy one for me. 30mm depleted uranium out of one of these. 6560 grains at 3250 feet per second...if that doesn't stop what you're dealing with , then it was just your day to die. ;-) With a firing rate of 3900 rounds per minute, though, you'd have to be real careful with the trigger...huh, as long as we're talking fantasy scenarios, how about a 5- or 10-round burst-fire setting on that cannon?