I looked at building a 338 wsm and after doing a lot of research
it looks like there is no advantage over the 325 WSM (an 8mm/
.323 dia round) except bullet choices.
With lighter bullets the 325 will stay with the 338 win mag but not
with heavy bullets.so a cartrige based on this case wouldn't compete
with a 338 win mag.
It would be a nice round but with the cost of a custom reamer and
a set of custom dies (About $250.oo)there are better choices unless
you just wanted something different.
J E CUSTOM