I bought a box of the Remington managed recoil ammo in 300 Win mag.I will use them to get the scope set on a rifle I just put the mounts on tonight.If they shoot good I may deer hunt with it.Shaking the case it sounds only about half full.My experience with light loads in magnum cases is that they group poorly.Has anybody gotten good groups with these?If not,I'll post my results in a few days in case anybody is interested.