I would like to know some of the pro's and con's of the 7mm wsm in long and short action. What are the benefits of each, I hear the long gives you the ability to load the 180gr bergers better and the mag gives you a little more room. I have also heard recently that the cartridges may shift forward in the mag upon recoil causing alot of headaches. I was planning on going long, thought I may get some advice before proceeding. Thanks.