These are some of the damaged and cooked off ammo.

This is what it looked like down in the mag, where the rounds had cooked off.

Lastly, we shot a Sig P220 mag with the AR.

The round center punched a round of .45 ACP, but went through without causing any cook offs.

The bullet didn't slow down.

On the way to the range, Tman had said, "This probably isn't going to be that interesting."

I said, "Maybe so, but I promised C-4 I'd do the tests."

We were both surprised at how interesting it turned out and how much we learned.