[Anti-Bubba182]

Smokeless Reloading powder in its normal packaging should burn not detonate.

[Gaffer]

Agree. A hot burn, but not an explosion - only if tightly contained is my guess.

[Hugh the Scot]

"Smokeless Reloading powder in its normal packaging should burn not detonate."

Yet it is inconceivable that a lawn service might have stored ammonium nitrate fertilizer...