Re: 338 RUM data
I know this isn't the powder you are looking for, but I am getting stellar accuracy from my Rem 700 factory sporter barrel 338RUM with the 225 Accubond and IMR 7828SSC powder. I am shooting 93 gr and getting 3050 fps with 24" effective barrel length (26" barrel ported). Groups are around 3/4" at 200 yds off the bipod. Just a suggestion in case you had some around.
Leftys are the only ones in their right minds!
(and I ain't talkin' politics!)
NRA Life Member