Re: 7mm STW advantage over 7mm UM
I've just started shooting rifles (after 30+ years of pistols), with a Savage in 300 WSM. It was bopping me pretty good with the 180g factory loads I was using to get used to it - bad enough that I was developing a flinch. I ordered up a slip-on Limbsaver (Sims) pad from Midway, and it really made quite a difference. Have shot 30+ rnds of stout reloads off the bench a couple of times with it in place, and no pain at all. Not the prettiest piece of kit, but seems to do the job. Doesn't seem to move my eye back far enough to mess up the scope's eye relief.
There is no "overkill". There is only "open fire" and "I need to reload."