I have a new 25# bag of Federal Premium Magnum Shot that I purchased for melting and casting boolits with. It says "Hard, High Antimony Lead". Any idea how hard that would be? I am looking to cast some hard bullets in the Lyman #2 range, or Brinell hardness around 16 for 500 S&W and 454 Cassull. How hard is this shot in comparison? I know I can order a hardness tester for $50 or so, but I figured I'd ask here first. Thanks in advance.