I swage my own and 8 to 10 is way too hard.More like 6.My kit can make wc and swc in flat or hollow base and,for the swc I can make hollow point.I've pushed them at a little over 800fps without no leading at all and this in more than one gun.I must admit that I haven't pushed them to the limit just to find when they'll begin to lead.Masochist I ain't!