Lead #4 Super 10 loads last a long time. In 1985, I bought an Ithaca NID No. 2 Super 10 from Randy Shuman, and that year Winchester dropped the sole remaining 2 7/8 inch Super 10 load from their offerings. Remington had dropped the Super 10 a few years before. I bought all the Super 10 shells Potomac Arms had at their end of season ammo sale, some 24 boxes. I still have these full and a part box --
Ithaca NID No. 2 Super-10 458972 with Winchester Super 10 ammo.jpg