I have a 300 win mag R700 and plan to have the action blueprinted. I have a Bartlein HV barrel, APA muzzle brake, Wyatt's DBM for it when the action is being worked on. This lets me potentially change from the 300WM to another .308 caliber Magnum (magnum, cuz the bolt has a magnum face). Is there a chamber that would have less recoil, keep energy near the Win Mag at long ranges (>1000yds), and be generally considered as more accurate?