I bought a bag of old Remington Peters 3" hulls at the gun show today. They are new and unfired. I paid $8 for 90 hulls. My issue is I can't find data! Nothing in my Lyman manual matches these. My goal is 00 buckshot, preferably 15 pellet. I fooled with trying a load for Remington SP hulls with a X12X gas seal and fiber cushion wad, but the fiber wad wouldn't fit and the gas seal was super tight. I'm stumped. These are some fine looking hulls. Easily twice the thickness of most modern stuff.