Re: 300RUM powder choices
Guys, sorry to put a post here thats irrelevant to anyone other than a South African. But in case there are a few of us lurking here (I know of 3!).....
I've tried to order poweder. I even tried arranging to ship powder from Namibia to the US - it's prohibitively expensive to ship due to current restictions and requirements.
Scoops - S385 seems slower than IMR4831 to me. Accordingly it may be worth a shot (excuse the pun). The guys from SA Reloaders load S365 and S385 in duplex to approximate IMR4831, which bears me out. I know someone who uses S385 in his .338 Lapua. I'll pop you details.
B12/7 was designed for the 50 BMG, I'm told. Somchem claims you can use it with great success in the .338 Lapua.
This is an old exerpt from the Q&A on Somchem's website that I had saved (this part of the site hasn't been active for at least 8 months). Call me anal, but you never know when you'll need this stuff! [img]/ubbthreads/images/graemlins/wink.gif[/img]
"S385 is very similar to IMR4831.You can use data published for IMR4831 as guideline."
"You can also contact Somchem for a slower burning powder B127/0. This powder can be used at maximum loading densities without any pressure problems.Regards- Johan Loubser".
I understand Johan is now with Accurate Arms / Western Powders - now part of the same group. He was always helpful when he was in SA. I'm told if you track him down in the US you can still pester him!
Have you tried Manie Johannes at Somchem?
Hope this helps a little. I'm pleased you are doing all this work so that I can have it easy if (when) I rebarrel my 300 WM to 300 UM [img]/ubbthreads/images/graemlins/grin.gif[/img]