Second shots can be made and in rare instances even a third shot. How do I know? I did it about 30 years ago. I missed all three times and the worst part is my daughter who was about 7 at the time witnessed the fiasco. The doe was about 70 yards away and should have been an easy shot. I guess it was a case of doe fever.
I've only seen
one second shot made on a "hit" deer. That second shot was unneeded. Both were lethal, shots. This is from over 40 years of muzzleloading hunting.
It was done with a Pedersoli Kodiak double-rifle, and the shooter had both locks cocked at the time. So all he had to do was reacquire the sight picture and squeeze off the second shot
I've also seen guys with lever actions and semi-autos blasting away at deer but to no avail... we as ML hunters can't really do this, and good hunters even if they can really shouldn't do this (imho).
I've only seen once when a deer was hit that
needed a second shot and it was from a modern rifle, and FUBAR'd shot. Had the guy taken the time he used for the second shot on his first shot the second shot and the suffering of the animal would've been averted (imho)
I know of a fellow who shot three times at the same deer at under 50 yards and missed three times. Not the same thing.
Buck Fever can happen even to "experienced" hunters, …, so..., things happen.
LD