Join Date: Sep 2018
Location: Limousin France
Mexico has traditionally been fond of fireworks and this was probably the major production purpose. Equally, whilst Mexico did make gun powder and the Confederate States in the ACW were woefully short of powder, I can find no suggestion that they attempted to import Mexican powder.
Both of these suggest to me that Mexico only made firework powder which would explain the poor shooting qualities when employed as a firearm powder.
Firearm gun powder is different in the quality of materials and it's processing to firework powder. It is both less powerful for the same weight or volume but also fouls the bore greatly.