I found a post online here from 8-9-2001 on 338 RUM loads and it was the best I have ever seen and I joined LRH. I have a new rifle coming day after tomorrow and it has a 30" Lilji heavy barrel and brake ( scaled down 3-chamber 50-BMG style brake ). All the data I have found is for a 26" barrel. The bullets I got to try first are Sierra 250 gr. GameKings and MatchKings and Hornady 250 gr Match (675 B.C.) I will have them Boran Nitate coated before I start. I have H4831, IMR4831, and H50BMG in stock, I am looking for 7828 also. I have Federal Large Rifle Magnum primers, I could not find any match primers. Any help would be greatly appreciated.