Probably been discussed extenseviley before but why a Mashburn over a STW. Is it the awesome factor? As in you're at the range, and your neighbor says "what are you shooting there"? and you reply "7mm Mashburn Super", your neighbor then asks "what's a 7mm Mashburn Super"? You then get a serious look on your face look him dead in the eye and say...."awesome".
Since I've been recently dissapointed with my 7RM handloads and a lover of the .284 maybe I need to look to a bigger case.