Re: 300wsm primers
I just ran a primer test with my 300WSM. The gun is a Win M70 Extreme weather, 24" barrel. Powder is H4350 at 63.9 grs. The best for me was the Winchester Magnum primer. Ii did not shoot over a chrono. I will attach my target results. Keep the thread posted if you do any testing as well. I am in a constant search for improvements to my 300WSM.
"Skin that one, pilgrim, and I'll get you another!"