The Mexican gunpowder dilemma

[Jim McDougall]

Originally Posted by fernando

Hoping not to be boring but, this is the first time i read of Mexican gunpowder grade being put in concrete terms, rather than just bad, poor or mediocre.
I have extracted a couple of (hopefuly) interesting paragraphs from the work "Finding A Face: El Soldado Mexicano 1835-1848" by Kevin R. Young, Historian (San Antonio, Texas).
I hope the PDF i have created is amenable.

.

Fernando...………..not boring!!! This is the exact topic we are trying to examine, and this is an absolutely excellent excerpt with key information. This is actually a source I had not seen, so thank you.

With regard to the Cazadores, these were actually of the more elite forces in the Mexican army, and as such they were better trained, excellent marksmen and were typically issued the Baker rifles. These are, as per their description, rifled and thus capable of accurate fire.

I would add here, digressing from the powder issue but to the use of lances by Mexican cavalry, the resounding defeat of US dragoons by Mexican lancers in the first skirmish of the Mexican War (1846) was at San Pascual in California. This was noted to describe the skill of Mexican lancers over the supposedly well armed dragoons.
Actually, the US forces were well worn after one of the longest marches of the time, and were on blown horses and mules, armed with new type percussion rifles. It was extremely cold, and literally the middle of the night in early morning hours.

It as been claimed they were overtaken by Mexican lancers because the powder in their guns was wet from earlier rain, however the real reason was the cold fingers in total darkness could not secure the necessary firing caps on the guns. These were 'improved' M1833 Hall carbines which had a percussion system but flawed breech which often gapped over time, and the paper cartridges were loaded OK, but the priming caps were the bigger issue.
The paper cartridges, contrary to popular belief, were not truly dampened as they were held in cartridge cases which were treated to be moisture resistant.
After sunrise, fighting continued in degree with the guns of the dragoons firing as designed.

Beyond this, the Mexicans were not regular line cavalry, but vaqueros (ranchers) of militia armed with the lances they used for hunting and as previously mentioned, notably without firearms.
They were on familiar terrain, and excellent horsemen, well mounted .
Members of the American force were unable to adequately defend themselves.

The dramatized painting is of course compelling but as often the case, embellished. It is not clear whether the red pennons, or any were on the lances. The red is of course the 'no quarter' warning later described in the accounts of the Alamo and the deguello.
The image of the battle area reveals to rugged terrain they were in.