Much of the damage done by a bullet results from the tumbling motion and the cavitation in the tissue. This is the bullet track in clay of a .38 caliber round, demonstrating that the wound track is much larger than .38 inches (closer to 3 inches).
which is consitent in the viscosity of the human body cavity.
see if you can find a picture of what a 8mm mauser or 7.62x54R round does to clay. I saw it on a show once, and its pretty ugly!
I wonder what type of bullet was used?
which normally means a lead round nose.
Clay does not close on the wound channel like flesh does, if it did, what you'd see is a much smaller "tunnel" where the bullet passed through. That's why expanding bullets with jagged edges are more useful, they tear up the fleash as they pass through making the channel larger and not as likely to fully close. Flesh swells closing the wound if the hole is not too large.
Oh yeah I can see the marks now. Thanks.