To be honest, RL17 is a little slow for that bullet weight. You really see the advantages in the 200 plus grain bullets. I would suggest RL15, Varget, IMR 4320, and even IMR 4064. Another you may want to try is Power Pro 2000MR. It is very nice powder to work with and you will see some nice velocity gains. CFE 223 would be another suggestion. Good luck finding any of these powders. Might be able to score the IMR's. Power Pro might be available too as I have not heard to many people using it yet.