Re: 7mm wsm brass?
All of teh WSM cases (300, 7mm, 270) are different in capacity and a neck length. I do not recall exactly the numbers, but I know for sure that 270 has the longest neck and smallest capacity. (hence this is the one that is the one of the favorites for F-Class shooters as it has the long neck and the capacity is not teh important factor in velocity for teh 180 Bergers).
With a longer barrel, you get identical velocities out of teh 7 SAUM as the 7WSM. Plus because of its shoulder angle, teh 7SAUM feeds from a magazine easier than the 7WSM. If you want to mag feed these, I suggest a long action to retain maximum case capacity regardless of the case that you are talking about.
Personally, I would look at the 7mm/270WSM if I were not wanting to go from 7mmWSM down to 7 SAUM. Then again, I shoot teh straight 7WSM in two different rifles, and have put at least 4,000 rounds down range in the last two years with that chambering. My KMW is now on its second barrel (1,680 rounds through the first one, and it died in the middle of an F-Clas 1,000 yard relay)
.300 WSM has a touch less in capacity but a slighly longer neck than the 7 WSM. Of the three, the straight 7WSM has teh shortest neck and largest capacity. (again by a small margin on the capacity)
I didn't find teh Whinny brass to be that bad, but I bought aton of it and then prepped it in batches. I still have at least 200-300 sitting in my garage waiting to be prepped.
JeffVN
