My brother aquired a Mec 600 I believe it is and everything appears to be there. He told me if I wanted to mess around with it to have at it. I want to load 12ga 1-1 1/8 oz trap and skeet loads. I have about 500-600 Win AA shells my buddies grandfather loaded and I would like to take them apart and use the shells and I also have access to 500-600 Win AA shells from a buddy. I began looking on Hodgdons site at powder to see if something I had would work and noticed a ton of data for different wads and primer types. What power, wad and primer would you guys recommend? Any other tips to loading shotshells? I have been reading and watching videos and it seems pretty straight forward. I will be loading for a gas operated semi auto and a pump.