In American Football: There are 11 people on the field (as always). There is one quarter back and sometimes one running back.
I believe it would be called a Pistol Wing Formation
The shotgun formation consists of the quarterback standing 3 to 5 yards behind the center.
In the I-formation, the QB is directly behind the Center, with a FB and HB behind him. This formation is better suited to running plays. In the shotgun, the QB stands five to seven yards back. This gives the QB time to set up in the pocket for passing plays.
1963
One or two, depending on how many barrels the shotgun has.
Depends on the shotgun and what you are hunting.
Technically yes. But that formation is called the pistol formation which is a modified formation invented by current university of Nevada head coach. It is not used in the NFL and is not largely widespread in college football although it is not rare to see it.
Shotgun - novel - has 160 pages.
I believe the quarterback should stand 4-5 yards.
Usually that is a signal for one of the backs to go in motion.
When they are five yards behind the line of scrimmage they call that the SHOTGUN formation.
5 in a semi automatic shotgun, no limit on pump shotguns