Small report
All the 6mmBR brass that I loaded previously as virgin brass I used reduced loads, which was a good idea, you'll see why in a few.
Since my 30.4 grains of Varget load/105 hybrid shot so well, and there weren't over pressure signs, I thought to myself, well I'll just use that charge in the 50 remaining virgin brass I had left. I had all of them charged with powder then I grabbed the first case and bullet, attempted seating the bullet with my Wilson arbor seating die, and could not seat the 105 hybrid bullet all the way in to the set depth of .005" off the lands??!! A super compressed load condition happened.
Turns out that with my "neck sizing" only die, which does not size the body of the case, a fired/fireformed case is expanded enough that the 30.4 gr of Varget fits fine but not in a virgin case, with respect to seating at the depth my freebore has! Always a first time, right??? I haven't run across this before, at least not to this extent. So bummer to me, I pored all the powder from the cases back into the powder hopper
. I then reduced the load 3% and finished seating bullets with no problems.
This morning was one of those very rare really awesome shooting days! That 29.4 grains of Varget reduced load, in the virgin brass, shot extremly well at 1025Y, like 4-5" vertical, and I hardly missed a 1' wide steel in 1-4 mph winds. In contrast, my friend found it very hard to stay on steel with his 260 and 6.5 Saum. I think the tight vertical and low ES the 6mmBR case gives made the difference, as well as how accurate it is!
I shot one group at 100Y for the heck of it, 5 shots touching into .282". My friends rifles weren't shooting the best, both just over an inch which would explain why it was hard for him to connect.
I'm pretty happy with 6mmBR now!
This is that steel I mentioned that was at 1025Y. I cropped out my friends 3 hits which were higher up on it, and so the darn file size would work.