I have always struggled with fast down picking and I am look for some help or useful techniques. When I play songs like Master or Creeping Death I just can’t keep up with down picking so I always revert to alt picking (sounds like a pile of crap when you do that), down picking just sounds more aggressive, cleaner and lets face it – pure Metal. So far what I learnt is choke down on the pick and try stay as relaxed as possible. I basically max out at 160 bpm right now, try any faster and my arm starts getting involved and I tense up. I love metal and will die a happy man if I can play Master from start to finish the correct way without breaking a sweat plus we all know it makes you a babe magnet (my wife disagrees )