I went out to BRRC on Tuesday, the first day it's been above 80F in ages, so it was blowing a bit. The 600y was closed in prep for an upcoming comp, so had to head on over to the 300y. I was using a bipod and rear bag, and after the zero check, I went straight to 300 on paper. I used 0.265 as the G7
@lte82 provided above, and then shot a slow-ish 5 shot group. 1 inch with the wind switching up a bit. I was pretty happy with that. Then I shot a few random number of shot groups, and these were all what I would consider rapid, all probably done in under a minute. Also extremely happy. Very little vertical spread, just horizontal from the wind and sending them so quick.
These shoot, so I'll just be sticking with this one, and is more than accurate enough for any matches I would think to use a 308 in.