I say this with all due respect, so please no one get offended...
Unless someone can explain to me why all the references I have read seem to make it sound like it was mostly used as a demonstration piece to impress the natives than anything else, and also, if the air rifle was so great, why they equipped the rest of their men with standard flint locks instead of the great air rifle, then I maintain my belief that the air rifle was nothing but a neat toy, although a useful one, and the standard MLs were what the expedition relied on for their survival. Don't get me wrong, it was and is an amazing piece of craftsmanship and history, but if it is so great, well, regardless, I'm not trading in my flint locks for air rifles. Are you?