by Hoot » Thu Jan 28, 2021 5:21 pm
A few years back, one of the commercial members reported excellent results using W296 (AKA H110) with the 300 XTP Mags but I forget who it was. I could have swore that he worked up to 40gr. Figure on starting around 34gr and working up in 1 gr increments. My experience with them in my 1:24 twist barrel was the faster I could get them to safely go, the more the groups tightened up.
Check to make sure that the bullet is not into the lands as that can cause increased pressure. In my barrel, an assumed safe COL of 2.26 wound up hard into my lands. I had to reduce it to ~2.20 for a .020 jump.
Remember, max loads worked up during the cool part of the season can turn catastrophic in the heat of summer with ball powders.
Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.