Although I own a Rem 870 Police, I know very little about shotguns in general. I think I'd like to have a semi-auto and prefer to shoot light loads just for fun; however, I've read that often semi-auto's can be finicky unless full power shotshells are used. Is this often true? Isn't there a way to "set" them for soft loads? I know the answer is stick with a pump, but for some reason, a 20 ga semi interests me.