RE: 7MM WSM velocities
I went to the Reloader site and saw the same thing you did. I have only loaded for a couple of 7mm's over the years, and I always loaded the heavier 175's.
I can not debate the difference between comparable bullet weights and different caliber's. I have never studied it that well-so I will take your word for it. I just find it a bit amusing when some member's say the 7mm is superior to the 30 caliber-yet you are saying the larger caliber will yield a slightly higher velocity??? I got to remember this one.
I have also found it hard to compare velocities between caliber's(with the same weight bullet), when I have seen 200 fps swings with the same load, but different rifles(with comparable barrel lengths). Tom.