3.5 gr Clays. That is Hodgdon's minimum with 200gr bullet. I shot a lot of those but then got a deal on a bunch of 180gr bullets so I'm using them now for pistols. Hodgdon's minimum in various calibers and bullets has always worked well for me for CAS. If you don't have Clays, it does not seem to be back on store shelves yet but Clay-Dot is and that can be substituted.