i agree about tracers. it was so hot in germany in ‘77 (how hot was it, you ask?) we started pulling tracers out of machine gun belts, mortars could hva e max of 3 flares in the air and they had to burn out 100m above the ground and they were only fired to support tank platoon night battle runs. finally, after we went home, they just stopped because the tracers in the 105mm tank shells were causing fires.
only wat target shooting would cause a fire is overloading black powder weapons and anybody who shoots black powder is already smart enough to know better.
I saw on the T.V. where they thought/ had evidence that the shooters were shooting at exploding targets.
http://www.youtube.com/watch?v=iqfEi6pVurI&feature=related
Tracers perhaps.
I would think that probably a higher risk is just by having folks around. Smoking, exhaust pipes parked in the grass, etc.