The 20-Inch Rule. What lead bullets actually do to the meat you feed your family.

Every hunter knows the shot. Almost no hunter knows what happens in the half-second after.

You took the shot clean. Broadside, behind the shoulder, one-shot humane, the way you were taught by your father, or his father, or the Hunter Safety instructor at the community center.

The bullet did something you have never seen. Because nobody has ever shown you.

A lead-core rifle bullet, the kind that sits in almost every box of .30-06.270.308, and .243 on the shelf at your sporting goods store, does not stay a bullet after impact. It does not pass cleanly through a deer the way the cutaway diagrams show.

It fragments. Into dozens. Into hundreds. Of microscopic lead particles.

The X-ray evidence.

In 2007, a radiologist named Dr. W. Grainger Hunt put 30 hunter-killed white-tailed deer through a hospital CT scanner. The images have been in the peer-reviewed literature for almost twenty years.

On the X-rays, lead fragments were visible up to 18 inches from the bullet's path. Some fragments were smaller than a grain of sand. Most were invisible to the naked eye, and to the knife.

The Minnesota Department of Natural Resources replicated it. North Dakota replicated it. The Peregrine Fund replicated it with elk.

In 2008 the state of Iowa recalled an entire food bank's worth of donated hunter-processed venison after X-rays showed lead fragments in the ground meat.

Up to 20 inches from the entry wound. That's what the scans show. That's the number every gun-owning father needs to know.

Why you never felt it in the bite.

The fragments are too small to feel. Too small to see. Too small to pick out with a boning knife, no matter how careful you are.

And here is the part that matters for the chili your kids ate last Sunday: lead is extracted from metal into food by heat and by acid. A pot of chili, cooked for four hours, in tomato and vinegar and beer, is a laboratory setup for pulling lead out of those fragments into the broth. A slow-cooked venison stew. A pot of Bolognese with last season's elk.

You never tasted it. Your kids never complained. Their blood lead went up anyway. Just a little. Every season.

Who has already figured this out.

• The CDC studied 738 North Dakota hunters in 2008. Hunters who ate game shot with lead ammunition had higher blood lead levels than those who did not.
• California banned lead ammunition statewide for all wildlife hunting in 2019.
• Denmark banned lead shot in 1996. The Netherlands followed. The EU rolled out a broader ban on lead in wetlands in 2023.
• Major ammunition makers, Barnes (TSX / TTSX), Hornady (GMX / CX), Federal (Trophy Copper), Nosler (E-Tip), now sell full copper bullets that don't fragment. Most American big-game hunters who have switched describe the performance as equal or better.

There is no faction in this. There is only information that traveled slowly.

What Fluoro-Spec actually does here.

Fluoro-Spec is not a meat test. No consumer kit on the market is a practical field test for lead fragments in ground venison, that needs an X-ray or a lab ICP-MS.

What Fluoro-Spec is is the test that covers the rest of the kitchen.

Because once a hunting family knows about the 20-inch rule, the next three questions they ask are always:

• The bowl we served the chili in, was the glaze safe?
• The cast iron pot we braised in, is the enamel cracked?
• The decades-old crockpot our kids use for mac and cheese, what's in the liner?

Those are exactly the tests Fluoro-Spec runs. One drop. One swab. 30 seconds. Orange-to-green fluorescence under the included UV pen, green means lead. Nothing subjective. Nothing you have to send to a lab.

Pick the kit that fits your situation:

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What to do this week

If you take nothing else from this article, take these three steps:

1. Switch to copper bullets for next season. Barnes TSX, Hornady CX, Federal Trophy Copper, Nosler E-Tip. Performance is equal or better. The fragmentation problem disappears.

2. Do not grind the meat from a lead-shot animal. Grinding distributes the fragments through the whole batch. Steaks and roasts contain the damage to a smaller area. If you do grind, accept that the entire batch is contaminated.

3. Test the dishes you serve game meat in. The crockpot liner, the chili bowl, the cast iron with cracked enamel. A drip kit takes 30 seconds per item and tells you which dishes are adding lead on top of what the meat brought in.

You did not know the 20-inch rule a week ago. You can choose what happens next season.