Fun fun fun....
In 1990, while on a US Army range in USFK/Korea, a few MPs & I watched as a guy in our squad fired a M-16a1 5.56mm full auto with milspec tracers.
The target & stand burst into flames! We were all surprised by the tracer hits.
It was quickly put out & we all had a good laugh.
Speed's fine, but accuracy's final.