In playing with my new 6.5 Creedmoor I wanted to try H4350 as it had all the buzz. I eventually found a pound. What I have experienced is that RL17 provides better accuracy and slightly more velocity. RL16 provides equal accuracy and much greater velocity. RL16 is also very consistent from 70 to 12 deg. I no longer care if H4350 is available.
Amen brother. I heard RL16 is good from -320 degrees to 560 degrees. You guys make the switch to that powder, it's damn good chit maynard...