by Hoot » Fri Jun 09, 2017 9:08 am
Welcome aboard Kevin!
I myself have had mixed results with the 300 DC in the past, but in my 20" Bartz upper, they shot pretty darn good over W296, which I'm led to believe is the same as H110. Start at 38gr with the bullet seated to almost burying the cannelure beneath the mouth (appx 2.06 COL), then taper crimp down into that cannelure to yield a case mouth diameter of .475 measured as close to the mouth as possible. Work up from there with an eye on your brass for pressure signs. Its getting hot out and ball powders can get feisty as the temp goes up.
Here's some 100yd 5-shot DC groups when it was 70-75 degrees out.
Hoot.
In Theory, there is no difference between theory and practice. In Practice, there is.