Originally Posted by WhelenAway
I don't know what the difference is, but the WSM case is .555 at the web, and the RCM case is .532. The WSM case is 2.1" long and the RCM case is 2.015".

So the WSM case appears to have a fair bit more capacity.


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Agreed.

I'm struggling to understand how two less in the magazine and poorer feeding with minimal velocity gain makes this new case a worthy choice over an 06-based round...

“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery