![]() This can be seen in many AR-15 target practice videos and photographs available online, and is accurately reflected in the photograph posted by Rothman on Facebook.Ī bullet causes its most significant damage inside a person’s body, destroying the blood vessels, tissue and bone in its immediate path (“ permanent cavitation“), but also creating a kind of shockwave outwards into the tissue that surrounds this path. So a round fired correctly from a functioning AR-15 should create an entrance wound (or target practice marking) just under a quarter-inch in diameter. 223 Remington cartridges, which are housed in bullets with a diameter of 5.7 millimetres. Jay Wachtel, a retired police sergeant and special agent in the Bureau of Alcohol, Tobacco, and Firearms, and a former criminal justice lecturer at California State University, summed it up in an e-mail: “The entrance wound for any firearm projectile is essentially the bullet diameter.” The “black hole” shown in the poster is vastly too large to represent an AR-15 entrance wound. There are no graphic images in this article, but we do at times get into descriptions of the damage caused by gun shots that some readers might find upsetting. ![]() ![]() In brief, both sides in this dispute are right in some ways and wrong in others, and each photograph offers an incomplete examination of the kind of damage and impact that can be caused by gun shots.Īt the heart of the issue is the question of what is meant by the “hole made by an AR-15.” There are basically three possibilities: the entrance wound, the exit wound, and the cavity caused by a bullet as travels through a person’s body. The poster has become the subject of ridicule and anger among some gun rights advocates online, prompting parodies and responses such as this one, which was shared more than 50,000 times on Facebook. It’s not clear what are the precise origins of the photograph on the left, or where it was taken. ![]()
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