Head shot.
It is not likely, but it IS possible. Depends on the bb gun, distance, and where you are hit.
While a BB gun does not have a lot of power, you still may be able to kill a deer with one. It is unlikely, but depending on where the animal is shot and if the BB is strong enough to puncture the skin, it is possible.
BB guns are a poor choice for killing snakes or rodents. The BB do not deform when they strike and the rodent will suffer. Pellets are a much better choice to kill rodents. Yes the 750 will kill the snake but it may take more than one shot.
Untreated, it can kill.
BB = Ball Bearing. It a form of Shot, used by shotguns.
Yes it is passable to kill a Crow with a BB gun
Needs to be repaired.
It is possible with a good shot to the head. However the animal will suffer, a pellet rifle is a much better selection.
You can kill rodents with a BB gun
The letters BB indicate the size of the shot that is in the shotgun shell.This is telling you that your shot size in the shell is the same size as used in BB guns.
Your question is a oxymoron. Pneumatic BB guns are single shot. Machine guns are Multi shot. There are several C02 driven BB machine guns