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Just curious...does anyone know the ignition temperatures of Pyrodex and/or 777? BP?
Thanks,
Pete
Thanks,
Pete
Seems like I've read 600-700-ish somewhere...you might check Hodgdon's websitePete D. said:Just curious...does anyone know the ignition temperatures of Pyrodex and/or 777? BP?
Thanks,
Pete
BigDave said:Black powder lowest temp: ~ 300 C, or 576 F
(varies slightly based on formula differences)
The interesting thing is that the subs are so high sulfurless bp is in the same range.
Sulfurless BP: ~400C, or 755 F.
(sulfur is in bp mainly to lower the ignition temperature)
I might just make up a batch and test it.
Sulfurless BP wouldn't smell like BP, but then it would have much less fouling since 80% of the smoke and residue in BP is from the sulfur.
BigDave
Ahh... I just searched old posts and found 777 is sulfurless BP spiked with a bit of perchlorate to increase it's power, and pyrodex is basicly a reduced sulfer BP spiked with perchlorate to increase power. That makes sense based on the power and ignition temps.
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