I've had good luck running Clays under 180 grain cast bullets. Makes good groups and has a moderate recoil pulse. For minor loads it's perfectly safe. It's easy to double charge a case with it but being fully conscious of what you are doing while reloading should eliminate this. If you're looking to make major loads there are better powder choices.

Clays is awesome as a target powder with 158 grain bullets in 38 Special.

Can you say "Clean"? It is incredibly clean burning powder

All the Best,
D. White