Hate to do this but I lost the last information. Canot find the thread anymore. I have a XP100 16" 1to8 twist 6mmx284. Thank you for the information again.
Mine with a 19" barrel shot 51 gr of h-1000 cci br-2 lapua brass and 115 d-tacs into a 3/4 inch group at 250 yds. Tried retumbo and h-4831 but the 1000 worked best.