bigd 7378
Check out the target below for the story on the 150 ABLRs. There appears to be a sweet spot at 2,935 fps and bad news at 3,018 fps. The 168 grainers like similar velocities.
As to where to shoot. I'm a member of Cascade Shooting Facilities out near Ravensdale. It has 1,000 members (capped) and takes about 3 years on the waiting list to get in. But... they have a public shoot for $10 every other Friday/Saturday. The schedule is on the web. Next weekend is one such weekend. This place is worth the wait. Check it out.