Not sure what the diameter of their "grapeshot" was, but it looked a little small for grape and a little large for canister. I demand a ball count! Devastating on the pig nonetheless.
The spoons and forks didn't do much, not enough mass to create any momentum. There's always the chance of a lucky hit on a vital spot, but the pig showed no signs of serious injury.
The steak knives surprised me. Flechettes indeed! Their greater weight due to the wooden handle no doubt contributed to their extra effectiveness.
The nails were sort of unspectacular, but they did leave some incapacitating wounds on Porky.
The sections of chain were devastating! They nearly ripped the pig carcass in half. Although I felt the chain was a little out of place because, like the control load, the use of chain is no myth. Also, it's my understanding that chain was not really used as an antipersonnel load, but rather as a means of disabling a ship by tearing apart its rigging.
All in all, it was fun to watch. "Old Moses" is a fine gun, and the star of the segment. Yes, a naval gun would have been more appropriate, but given the circumstances a gun on a field carriage is a lot more user-friendly.
The Mythbusters need a gun of their own.