I've only loaded the Accubond 180gr and the Sierra 165gr HPBT Gameking for my 300UM. The 165's are tack drivers. I've shot out to 300 yards and get a consistant 2"group at that distance. Off a bench, of course. I'm buring 7828 in front of a Rem Mag primer. I haven't been as lucky with the Accubond. Can't seem to get a good accurate load for it. You guys are putting out alot of great info that should help all of us, thank you.