The Bergers with 63.0 grains of RL 17 shoot 1/2 minute 3 shot groups and 3/4 minute 5 shot groups. I've actually shot many 7 shot groups with this load and they were all 3/4 minute as well so I'm confident it's a 1/2 minute cold bore gun and a 3/4 minute higher volume shooter.
I don't remember how much RL 22 I put behind the 180 grain Interbond but 3 different powder charges all shot less than MOA.
I've had good results with IMR 4350 and not so good with IMR 4064 and RL17 but each rifle is different. Working on a new H4350 load presently. My buddy has a RL15 load that's been working pretty well for him.