Set up: Remington 700 Sendero Chambered in .338 RUM. Factory 1:10 twist barrel. Timney trigger Vias Brake Bedded in factory HS Precision stock. Seekins 4/6 rings on bedded seekins 30MOA base. Vortex Viper 6-24x50 PST FFP Scope. This riffle has been giving me fits trying to find a great load for it. Really only interested in hunting bullets. I have tried 250g and 300gr. Bergers and 300gr. Nosler accubond in every configuration and seating depths using H1000, RE-22 and Retumbo. Best 3 shot group to date is the 250 Berger Elite Hunters with 79.4gr. of RE-22. doing a 10 shot average of 2665fps. .850" group at 100yds. ten shot a 10 shot group to zero at 200 yards. (See Pic.) Set the gong up at 600 yards and its running about a 12" group. Ugh!!! So far all the 300 gr. bullets are completely out. It hates them. 2 1/2" groups at 100yds.