What weight bullets are you shooting? I have used IMR-4350 with 140 grains Accubonds. I have also loaded RL-17 with 130grain Accubonds. The IMR-4350 load has been my most accurate load and has produced a velocity of 3050+ ft/sec. I use 60.5 grains of IMR-4350 which is listed as max load in the Nosler #6 manual.
The Alliant Web site lists a max of 62 grains of RL-17 with a 130 grains BTSP bullet. This is the load that I shot in my gun but I have not gotten the accuracy that I am looking for and I have not checked the velocity.