Though I have been reloading handgun and rifle ammo for quite a long time, I am a newbie when it comes to shotguns and shotshell reloading. Since I am not committed to shotshell reloading just yet, I am buying loaded ammo and then collecting the spent hulls. Is there a market for selling spent hulls to reloaders? If so, are there specific features of the hulls that reloaders look for?