I've actually looked at both the 35WSM and the 35WSSM, on the computer, and they look fine. As far as shootability, I much rather shoot either my 358 or my 35Whelen than my 7mag.
The WSSM case capacity is between the 358 and the 35 Whelen, so it should be eminently shootable. In 375 diameter, it should be darn near equivalent to the 376Steyer or the 9.something Mauser. JMO, Dutch.
