Rl 16 vs h4350

I have used both powders in both .243 Win and .260 Rem. In both cases I got better velocity with the RL16, but worse accuracy and ES/SD values. They seemed similar from a temperature sensitivity standpoint.
 
thanks man. I shot them under a chrono today and found the same thing. my groups were around an inch when i know my rifle is capable of half inch groups. and my velocities were very inconsistent.