I started a small fire a year two ago by shooting into a stump. I had fired several rounds into the stump when I noticed a glowing piece of debris arc out of the stump and land in the grass about 50 yards from the stump I was shooting. Next thing...there was smoke and a small grass fire. We put it out quickly but it could've been a real problem had I been alone. It burned about 20 square feet before we could even get to it.

I think someone had been firing tracers into the stump and one of my rounds impacted the tracer round and ignited it. I don't know what else it could've been.