One place for that type of info is a shotshell reloading handbook. My dad gave me all his shotgun loaders and equipment but before I loaded my first shells I read his old books too - including Lyman's Shotshell Handbooks, First Edition and Second Edition. Their hull IDs are somewhat dated now but the basics of reloading have not changed much. Fourth Edition is "current" (mid 90's I think), and might or might not ID cheddite hulls. Fifth Edition was due out the other year but is still not out. I'm not sure if they will ever release it; there are so many components on the market today it would be tough to catalog them all.