CCI's and 231 and Unique
Cgpro856--Kinda looks like you can go ahead and use CCI primers and W231 or Unique powder, with impunity.
Note: Am using Win Small Pistol primers with the 231 myself, and have never had ap problem there, either.
IMX, primers aren't a usual source of problems, properly applied, in any load!
God Bless America