epj: Don't just start off with 4.5 to 4.7 grains of UC under 158 grains of bullet. I load with UC all the time and it builds pressure rapidly. IMHO you should start with 4.0 grains and go up no more than 0.1 grain at a time. I load 4.0 grains of UC under a 110 grain Berry HPplated and it is a stiff little load. ........... Big Cholla

I really like the accuracy and clean burning of UC. As said before; DON'T mix up the Clays...........