This thresd started with a gun question.....
An old timer in South Carolina told me all you had to dowas stick your rifle or shotgun bbl down in the snakes direction and the snake would do the "sighting" for you.
Art, you ever heard of this?
I have had the opportunity to try this in south Texas on several occasions. It works. I must suggest that you consider the lenghth of the snake....as related to the length of your arm and gun.
270, 7mm mag and 338 all seem to work well. You just stick it in close to their head, about a foot or two and the snake lines itself up on the bbl. Squeeze trigger, dead, no head snake.
The effect of a shotgun with the same method is quite profound......
So, don't worry with the hand gun.
Single shot shooters only shoot once.