do you have the sweet spot chart? if not find it...
I have a .300win mag boss abolt, the only load I ever dialed in was rem 180 core lokt's, I just used the recommended setting and was getting 1" groups at 100yds.
From what I've read, the faster the bullet, the more it should be adjusted to one way i forget which, ie 150's would wanna be at a 9, but a 180 would wanna be a 1, but I do seem to recall the rem180 sweet spot being more far out....
Maybe pick the load/bullet you want, and dial it in best you can, if you can't get groups of 1.5" maybe try a different load...
http://www.browning.com/customerserv...ail.asp?ID=109
So according to that chart....I probably had the 180 core lokts dialed into setting 1.0...
You have a BAR .300win.mag.? My setting was for the A-bolt, use that same chart though, since it shows bar and abolt suggestions...