I am honest curious about this cartridge? I own the big brother, the 350 RM which is my primary hunting rig, I love the cartridge, not the best ballistics, but all out a great round for any big game, I looked over a lot of cartridges for a build, I know as far as ammo and availiblity goes other calibers such as, 260, 308, 243, 6.5 creedmoor,338 etc are a better selection, I own 1 heavy barrelled savage 308, and a a remington VTR 223.. I am for some odd reason interested in the the 6.5 rem mag? Any one have any FACTS about this cartridge they would like to share, let me know.. BTW, I am no shooter, 500 yds is about my limit..