Speaking a small, hand-held explosive devices; I always growl when I see one blow up with a pretty orange ball of flame.

I've thrown a few of those in real-life. All you see is a puff of smoke and a cloud of debris.

What's worse is when said device is capable of practically blowing down a small shed. THAT is definitely not the case with the standard issue devices.

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Keeper of the Jabberwock