have had no experience of it happening evah.
but, muzzle loaders with patches in dry woods & low humidity have been rumored......
don't have any actual evidence. but a a cotton patch is more of a suspect than a lead bullet.
Friend of mine was hunting with his family and a group on a WMA when we were kids. Muzzle loader hunts were all black powder, iron sights, etc...and were a big deal on WMA's back then because it was one of the few times you could kill a doe. The group decided to push an area that had been clear cut and nothing had grown back yet....except sage grass, which around here is dry in the winter. Someone took a shot, sage grass caught fire, and he said it was quite a sight to see and the game wardens weren't to happy about it. Alabama's pretty wet in the winter so even though there was limbs and junk on the ground nothing caught on fire except the sage.
