ABP.
You are so on the money with this. Bigfoot witnesses are the most crybaby of all outdoorsmen. I think there is a reason they didn't shoot the Bigfootses, but the footers will tell you other wise.
If anyone has read the multitude of books by any of the White Hunters of Africa. You will remember that against extremely dangerous animals, in remote areas, with little or no medical treatment available, these people would shoot animals much larger and faster than themselves.
How do you kill a Cape Buffalo? You shoot it through the boiler room. If your gun is powerful enough you break the front shoulder on the way into the boiler room. If you miss, and it charges you, don't bother shooting at it's head, the horns will deflect the round. Shoot it in the face, or if the head is lowered shoot it in the neck behind the horns.
How do you kill a charging Bull Elephant at 10 meters? you shoot it in a box about 6" x 3" above the eyes. if you miss, you die.
A charging hippo? Both barrels between the eyes or you are dead.
If a Leopard or Lioness charges you in the tall grass, you hit it where you can, and hope it buys you enough time to reload.
How do you kill a mountain gorilla? You shoot it. They die far too easily. One of the hunters I read, even said it was embarrassing how easily they died. And that he didn't like killing them.
How do you kill a Bigfoot? You don't. They disable you, and make you skerred.
Sources:
Peter Hathaway Capstick
Kalman Kittenberger
Wally Johnson
Ionides