I do reload quite extensively from .218bee all the way to the big .50
Looking at a few boxes of leftover Barnes .338 185fr TSX and having a plethora of .308 brass is what originally had me leaning 338 federal. Ive had tremendous luck in this caliber in 338-06 and 338wm.
However, given the velocity loss with a pistol, and pretty dismal ballistic coefficient of said bullet, im a bit concerned it wouldn't have the necessary velocity for reliable expanding at 300+ And my experience with .338 bullets is that they tend to be on the tougher side.
The hive mind here has given me a couple ideas that I haven't already considered, such as the 7saum. And the 6.5-284 definitely seems to be a performer and I imagine would have a fairly mild recoil.
I appreciate the responses so far, and if anyone else has any favorites please chime in.