Like I said at the start of this thread W231/HP-38 would be my choice but since that powder is almost impossible to find I also like WST, Zip and AA#2. I won't even mention Clays since the production plant is offline.
Other powders that will work and work fairly well are: Universal, AutoComp, Silhouette, BE-86, Red Dot, Promo, PB, Green Dot and probably a few others I just didn't think of right now.
I would suggest SR7625 but it's being discontinued VERY soon along with the other 2 remaining SR powders.