Originally Posted by Big Stick
'Bout like this................


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I have a 338 Super (338/8mm RM) built by Jim Cloward in the mid 90's. I used 340 Bee brass to FF because of quality (at his advice). I'm think the 338 version has like 5-6% more capacity than a 340. Load is something like 94 grains of Re-25 with a 250.
Apparently Cloward had the first wildcat reamers built on the 8mm case...he said the 7mm version (STW)was the worst of the bunch. But shooting times got a hold of the spare. The
300 was his favorite.