I don't Know BC the rounds you mentioned may not be in the same league. I mean this thing has a sectional density of a 30 caliber 190 grain bullet and comes out of the muzzle at 3000. I think it would make a great all around gun medium or large game. I just have some questions about barrel length , action length and rate of twist. There is also a question of how well it feeds that fat 284 case and whether any mods will have to be made to the Remington reciever.