Most common shotgun in a small town in Texas- Stevens SxS or NEF single shot, Winchester,Remington, or Mossberg if a pump
Recoil, kickback, would be stout but not unmanageable for a grown man, but they are usually shot from the hip
Impact on the shoulder would be very strong
I'm 6' 230 pounds and have been pushed back a foot or so shooting 00 from a 14" barrel
That kind of shooting is general point a shoot, pull the trigger gun goes boom
The only thing to learn is to not pull both triggers at the same time, but you only make that mistake once
Having a bullet in the chamber is incorrect terminology for having a round in the chamber
Don't make that mistake or your writing will lose all credibility
It only means that the cartridge is in firing position
It however does not mean that the gun is ready to fire
Yes it applies to all guns