Shooters started a fire in the Black Hills shooting steel core ammo, south west of Rapid City.
The rocks in the hills vary - limestone, granite, quartz, gypsum, iron ore, and I believe flint. Even with steel core ammo it would seem not too likely, but when a fellow shoots 1,000’s of rounds...
I see no reason for shooting steel core ammo, especially with AR’s into rocks. I guess for some it might be fun.
I don’t believe it would be at all likely for brass, lead or copper to cause ignition, perhaps possible, but very unlikely.
