I agree with you on the whole short action idea to save weight and even a shorter barrel too. However, I think if you go much shorter than 23-24" you will lose quite a bit of velocity. Maybe not as much as with the belted mags but still something to think about. The RCM's are made with powders to keep them from losing a lot in shorter barrels but as far as I know the WSM's have never really been touted as being good performers with short barrels. Like I said I'm not trying to take anything away from the WSM's because I like them and respect them too. Just mentioning some thoughts.