Quote Originally Posted by Toyoda
I currently have:
RL 15 and 22 (use the 15 in my .308)
4350
H4831
H414

Retumbo, ramshot hunter, and reamshot mag. I'm sure these are no help
All the powders you have listed are way to slow. The only possible one is Re15. The 223 with light bullets I find that N133, h322, and h335 work the best. My pick would be N133. IMR 8208XBR is reported to be the new go to powder in 223's.