338WinMag.

IMHO, the 325WSM isthe wannabeof the WSM line, they tried to make it work as a 338WSM but there wasn't sufficient powderspace so they dropped down to the next notch on the bullet caliber chart and found they could create a mediocre round as long as they kept the bullet weights down.
Whoopee.

On the other hand itIS way better than some of the "deer cartridges" for use on elk and bigger, so there is some gain.