Fascinating, Chris !
It is really amazing to see flintlocks equiped with a 'hair' trigger, something i would never realized
On the other hand, it is noteworthy that, exceptional sharp shooters like David Crockett, besides others already mentioned, could made their day without such a device ... that we know of.
I used to have two weapons with hair trigger: a saloon pistol and a magnificent olympic shuetzen, both in .22 caliber. But as i don't practice shooting and they were 'too modern' to be legal without a licence, i swaped them for earlier firearms
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