so, I took the rifle out today to do some initial testing, just to see what she can handle, max load wise. Found out, that the temperature of the powder really makes a difference, and so does distance shot. I am shooting a .308 win, here are the specs on the load(s)
Federal GM210M primers
Berger 155gr Hunting VLD
Varget (40-47 grains)
The tempurature today was 34 degrees when I was shooting, it was about an hour from when I started to when I finished, fired 17 rounds total. I was only shooting 100 yards. Today I was planning to see what my max load was, as well as do an informal initial ladder. since I was using an extreme powder, I was hoping that the later cartridges cooling over time wouldn't have that big a difference. I was wrong.
Here's my target:
obviously, there,s no real usable data from the target. In addition, looking at my brass, I got a very slight ejector mark at 46.0 grains, but that was it for pressure signs. I think I learned my lesson, I think I'll be waiting till it's warmer to do load testing for real, in 5 months.
putting 17 rounds in a 1.52 inch group at 100 yards, when there's a 7 grain spread in powder charge, has me questioning my sanity a bit