I've only loaded for the STW, but I think the real difference between, for the experienced reloader, would not be with the 140's. The best trajectories in the STW come with 160gr bullets. Past that, the added BC doesn't offset the loss in velocity. With the RUMS larger capacity, I would expect you could take full advantage of the heavy bergers (say the 180's), or the not yet produces 175gr NAB, a case full of WC872, and a 28-30" barrel.

This is where the RUM would shine over the STW.

You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

You cannot over estimate the unimportance of nearly everything. John Maxwell