As I recall, the show was somewhat "PG" with live sperm in a bag, and historical Civil-war era weaponry. IIRC the conclusions were more or less based on the findings that a fired bullet would have been at a temperature too high to keep the sperm alive long enough to do its "thing", notwithstanding the incredible amount of ricocheting required...Episode 30: Son of a Gun
It's survived untried for nearly 150 years: The myth of the Civil War soldier who was shot clean through his nether regions and the nearby woman who became pregnant when hit by the traveling bullet. Good luck, Jamie and Adam! Then the two test just how dangerous it is to use the telephone or take a shower during a thunderstorm. Finally, Scottie and Kari attempt to re-create the voyage of a hapless pair of boating greenhorns who set out to sea without first detaching their boat from their car trailer.
premiere: March 30, 2005
My readings indicate the bullet in question was supposed to be somewhat "spent." (Oops, that was unintentional!)
It happened to damage the soldier's scrotum area, actually carrying a portion of tissue away with it, and eventually impacting the young lady.
I have no details about where she was injured, but the implication is that the tissue was the source of her subsequent swelling, not individual spermatozoa.
I don't think the myth has been busted by this "experiment."