Join Date: Sep 2018
Location: Limousin France
By 'barbarous' he just meant crude and primitive Jim. Just his way, as a man of his times, of saying that it was of appallingly bad quality. John Company (to use the period vernacular) was not in the business of making powder for public sale but for their own use. Though doubtless some made their way to private use informally. Certainly not in sales to the Mexican government.
What happened was that the Bombay Gunpowder Manufactory was brought up to standard and is better know later as the Kirkee arsenal and a major ordnance depot and manufacturer.
There is no connection between them and Mexico in any way but the reference is a period detailed examination of the varied qualities of gun powder manufacture. Remember British ARW gun powder was so bad the government bought the factories and made them raise their standards until they were the best. There was also no connection between the British Ordnance selling surplus arms to dealers who sold them to Mexico and the Indian government and it's powder production. They were different governments on different continents.