I own a couple 7mm-300wsm's, built by SSG's Nathan Dagley ("308 nate" on here). Great, accurate caliber, simple to make brass and reload for; I expand 270wsm up to 7mm then size with either my Redding S Type FL with a .312 bushing, or with my Forster FL non-bushing die custom honed to .311 depending on what I cut the necks to. Boringly accurate and easy recoil even with my lightweight Pierce Ti long action and 28" Proof carbon fiber barrel. Norma case cut to 2.08" with a 180gr Berg VLD over 65.7grs of H1000, COAL of 3.100" gives me 3000 on the nose with more in the tank if I want; I didn't see pressure signs until 67.0 grains.
However, once that wears out, my next build will likely be a 7saum on a Borden Alpine Magnum Ti long action and Proof carbon barrel. Same ballistics with less powder in a smaller case, and ready to go, off the shelf brass (after neck-turned and annealed of course).