I don't really think its necessary ... we do reload our own bismuth, but that original hevi shot is pretty good stuff IMO. $30 a box for 10 shells?I can't believe that, thats $3.00 a shot. Thats getting to the point where if you do miss a bird, you might feel worse about wasting the $3 than missing the bird. I've always liked Kent Fasteel, and I think I'll stick to that.