text: is a spas-12 shotgun good? how many cartridges can it hld?do you need to load everytime you fire?whats it's calibre????? yes, but it is not the most modern one (there is also spas 15, 16). spas 12 (sporting purpose automatic shotgun ) is a semi/pump action shotgun. semi is gas operated, which means quicjer reload withouth having to ue your hand to reload, while the pump action..... well, i'm sure you've seen how pump action shotguns are reloaded. for ammo it uses 12 gauge shells. one more thing- this rifles are used in many law enforcement forces all over the world. if you're interested in shotguns check out benelli's guns (www.benelliusa.com ).