I will add that compact ie.short barrels, is NOT an overriding concern for a true LW mountain rifle. In fact Melvin Forbes heartily dislikes short barrels with their inherent increased blast and report and their ballistics compromises.

I will also add that a LW rifle, indeed any HUNTING rifle, should not be about producing small groups on paper. A hunting rifle needs to put the first shot from a cold and fouled bore exactly to POA EVERY SINGLE TIME. Without fail.
If they place the second and subsequent shots to POA then that is a wonderful bonus but they MUST under all circumstances put that first shot right where the shooter intended it to go.