I have my 6.5 Creedmoor and my 65-300 wby. I was planning on doing something in between. I looked at the PRC and the saum. I have a 300 saum which is probably my favorite gun. It shoots anything I make probably would shoot pebbles just as accurate so I’m a little biased about the 65 saum. I think I just talk myself into it. Kool let’s find one.I have a saum and my buddy has a prc. We both use the same set up for deer, h1000 and 143 eldx. Mine is at 3050 fps and his is 3030 fps but his is almost max load while I ran up to 3200 before pressure signs. With ADG offering brass now for the saum, I would say component wise they are equal. I would go with saum if you want more speed, PRC if factory ammo has any interest in you.
good luck to you