Did you wind the magazine up with the wheel on the bottom of it? This happened to me too.
You only have to cock it if it is a spring gun.
An airsoft repeater is an airsoft gun that you have to cock to get each round in the chamber.
yes
If you mean you don't have to cock after every shot, yes there are pistols like that. But there is no firearm you don't have to cock at some point.
Yes
Yes you have to every time. It depends on the spring tension.
Your clip may be bigger than your friends and it may be harder to cock
To cock a semi automatic shotgun simply insert the round you wish to use and pull the slide back then take the safety off and fire.
Yes, you will have to re-cock the spring every shot.
A spring gun? It depends on how fast you can cock the gun. There is not a fastest gun.
First you have to find the right sized bb's for it and then load it into the cartridge and then cock it... point... and pull the trigger
Definitely a gas pistol, You don't have to cock it between each shot