Re: 300 WinMag and 210 VLDs loads needed
I haven't tried R22, but have used H4831sc, H1000, and Retumbo. Norma brass, 210 Hunting VLD's loaded -010" off the lands, Fed215's. I get .5MOA or better with all three powders out of my Rem 700 Milspec, 24" barrel. H4831sc - 72gr, 2800FPS, H1000 - 75.5gr, 2800FPS, Retumbo - 79gr, 2880FPS. I settled on Retumbo. In my rifle it gave the highest velocity, best ES in the 5-10FPS range, and I have found Retumbo to give excellent temperature stability. While I had no pressure signs, I'd still start a couple of grains lower with all these charges.
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