Firearms were MORE deadly in 1780, not less. The difference is medical treatment then and now. In 1780, and torso wound was fatal, and half of limb wounds, due to infection. Today, gang-bangers routinely sport multiple bullet wounds from past encounters.
In 1780, and maniac could have loaded up a goose gun or blunderbuss with 1/4 lb. of rusty nails and fired it at a church picnic, causing a dozen fatal wounds. They didn’t.
The difference is the culture, not the deadliness of firearms.
Same typo twice. AND = ANY