Bullet?
The projectile that John Sullivan found in the dusty remains of Carlo showed no signs of having been fired from a rifle and having struck a target-would have been deformed by hitting him or, more likely, have passed through him at the short range that he was supposed to have been shot in 1944. But then again the whole show is pretty absurd...the "Bag O' Carlo" thing was hilarious.
"What is an Oprah?"-Teal'c.