Re: If you have a 450/400 DR and a 9.3x74R DR when...??
There really isn't much difference in the muzzle energy of a 450/400 and the 9.3x74R. If one could get a 7.5 lb. 450/400 like the flyweight 9.3's, I'm not sure what would be the point of having a 9.3.