The question came to me when my 7mmWSM is in short action and I have a feeding issue with magazine .
TheCOAL of wsm 7mm is longer than magazine in short action .
Now I don't want to make that mistake again
Now this time I am going to build 7SAUM in long action
Parts almost arrived , manners stock LA , purchased a new rem700 300RUM for Parts and action , kreiger barrel and SB 5x25 ready for setup.
It works. Not actually a new idea either. I've built Rem 6.5 and 350 Magnums on standard length Mauser actions. With a little work you can load out to 3.25" COL, and that turns both cartridges into quite a different animal. - dan