All info given to use is correct, Mec 600,hulls,powder,primes, and shot and pleanty of reading to get the load that you want and there are a lot of them out there. One outfit that does nothing but shotgun loading is www.bucksrun.com and the other is www.ballistic products.com . As for Mec reloaders are great,i have a Mec Model 250 (With serial #,$) in the 16 ga i have used since 1955 and still use it to this day and i shoot 1000,s of rds a yr. so you can,t go wrong with them. hoopw i helped some vangunsmith