My dad & I started shooting with the N-SSA in 1970. We both dropped out in the late '70s, me due to work and location, him due to a change in hobbies. He still had Minie balls & powder loaded in plastic tubes. When I got back into the N-SSA in 2007, he gave me his BP supplies. Those loaded rounds shot just as good 30 years later as they did when first assembled. I wish I shot as good as I did in the '70s!