A little more than a year ago, Department of Natural Resources officials were shooting dead sheep with high-caliber lead bullets, studying to see whether the bullets fragmented upon impact, and how widely any fragments might be found from wound channels. Sheep bear similarities to white-tailed deer, thus their choice as targets.
The study followed weeks, months and, in California, years of concerns that lead bullets pose hazards not only to people who eat venison, but to large aerial predators such as California condors and bald eagles. The birds often consume bullet fragments when they feast on wounded and unrecovered deer carcasses shot by hunters.
In California, lead bullets are prohibited in areas where condors fly.
The Minnesota DNR's study was important because it showed that lead fragments, many too small to be easily seen, travel much farther -- up to 18 inches -- from wound channels than had been believed.
Long known as a toxin, lead has been banned from gasoline and many other substances. And waterfowl hunters can't use it to shoot ducks and geese.
Still, the possibility that human health is threatened by lead bullet fragments has been met with great skepticism by hunters. Lead has been used in bullets for centuries, they say, and no one has been hurt.
The issue is highly charged and, as with all gun-related controversies, laced with many political considerations. The ammunition industry, for example, can't easily shift to producing bullets made of something other than lead. And other than copper, there aren't a lot of "somethings" to choose from to make bullets. Simply put, bullets are made from lead because it is ideal to make bullets.
But if lead bullets were the source of so much hand-wringing a year ago, whither the hubbub this fall?