Well, if we're talking factory ammo then yes I can see that.

But with the 243W case capacity of 52.8 grs and the 243WSSM at 53 grs, I just don't see the difference when one loads both to safe but like pressures. Trust me if Rem had chambered the 243wssm in their 7400 autoloader the pressures would be the same. In an AR-10, weight would be the only difference for a reloader.

Reason it stood out, I just got through dealing with all the options as it's time to rebarrel a 223wssm.