Quote Originally Posted by enfield2band View Post
We have been down this road before.

I believe the general term "detonation velocity" is a measure of how fast an explosive releases its gases. Gunpowder was preferred in the mines as it was considered a "soft explosive" because its slow release of pressure, compared to other explosives, rendered the rock rather than shattering it.
Semtex has a detonation velocity of 5 mile per second.
Detonation velocity is only used correctly for explosives which detonate. Such explosives are "High Explosives" BP is not.