Need help with 300RUM 230 hybrid target and US 896 powder

[NCMTNBOY]

So, I have looked for components for my 300 RUM for 5 months. This is what I have. Yes, I know H-1000 is a better option(feel free to ship me some). I understand US896 has temperature sensitivity, but its what I have (2 lbs from midsouth). What I would like is some real world data, or thoughts as to where I should start and theoretical max. I will be shooting it from a stock sendero ( with a wyatt box) with RP brass and will be using the Berger 230gr hybrid target bullets. Thanks in advance.

 

[Jud96]

Here is some data directly from Sierra's reloading app. They're showing 90.9gr as minimum and 100.9gr as maximum. Personally I typically start 3.0gr below book max and work up until I find a node or hit pressure.

 

[Dosh]

US869 is a great powder if used in a consistent temp, but quite temp unstable when temperatures vary. My best group ever @ 500 yds was with US869 but when I shot the same load at 20 degrees warmer it was not nearly as accurate.

 

[NCMTNBOY]

Great, thats exactly what I was looking for, from both of you. THANKS!