Moonie...I took my info out of Ctgs. of The World...latest edition.

I checked two of my loading manuals and found the same info that you have...

Maybe I'll go back to the 348 Win...same rim thickness. The Valmets seem to have plenty of meat to take the fatter case.

Now I'll have my "Short Fat luv2 375"...

I just measured my 300 FM Bertram cases; the rims were .060 to .063, while my HDS 375 FM cases are .057 to .062....Quality control...

As I remember, the thickness for both is .055...

I think I'll stick with the 9,3 and be just as happy as I have been all along...Happier; I just saved myself a pile of loot!