for the gun its the 14"barrel.i dont think there is any difference between it and the 10",except shorter.both are full choke and will kill rabbits(dogs may finish some)out to 30 yards max.i prefer to shoot 4 shot,there are less pellets but the size helps with getting some threw the brush.7 1/2 shot works in open stuff but at 20+ yards its like throwing dust on them.
the camera in most clips is this one
http://www.vio-pov.com/its pricy but i use it for everything.it is built rock solid and i am waiting for a zoomable version