MuskegMan,
The 9.3 B-S is the .350 Remington Magnum necked up to .366. It's yet another redundant wildcat: All it does is duplicate 9.3x62 ballistics in a short action. But apparently that's enough for some people!
The last time I asked Charlie Sisk, he'd made maybe 3 dozen rifles in 9.3 B-S. Since we developed the round in 2004, that amounts to over two rifles a year! Obviously it's a runaway success....
