I tested several loads today after our club bullseye pistol match...
These were 155 grain Berger hybrids, G7 B.C. of .247, and G1 BC of .483. According to QuickLOAD, H-100V and Reloader-17 give some pretty good velocities with these lighter bullets. All loads were 3.030" OCL.
The H-100V loads I started @ 54 grains and ended with 57 grains, in 1/2 grain increments. I didn't see any pressure signs. My accuracy node is around 55.5-56.0 grains of H-100V.
With the Reloader-17 I started at 54 grains and ended with 56.5 grains. There wasn't a huge fluctuation in groups size, and they were definitely larger than the H-100V groups. Again, I didn't see any pressure signs with any of the loads.
I'm going to load up a bunch with the H-100V and chrono them soon. I'm guessing they'll be around 3,000 fps... but we'll see. Surprisingly the POI of the 155 Bergers is very similiar to the 185 Bergers @ 100 yds.
I also loaded up a some 168 grain bore riders that my buddy gave me.
I have no info on these other than they weight 168 grains, and the driving bands are .308"... the projectile itself is .300".
I loaded these over 54 grains of IMR 4350.
They definitely aren't loaded to mag length... and the bullets themselves are LONG!! I shot 2 rounds today, just to get an idea of impact. They are definitely a little warm... I got flattened primers on both rounds, though I have no qualms about shooting them.
Both rounds were touching, but they were 2.75 MOA left and off the paper.
I'm just guessing, but what I put into shooter was a G7 B.C. of .300, and a velocity of 2750 fps. I only have 14 left, and I'm saving them for the 1 mile attempt.
Stay tuned...