I personally would not use a thunder beast for high rate semi auto fire. Being made out of all titanium it will be more susceptible to over heating damage.
I haven’t gotten my Socom yet, but that is what my wallet went with. I do want to get a thunder beast 338 eventually for precision work. For multiple calibers, semi auto, precision work the surefire is the way to go.
Another option, get the thunder beast for your bolt gun… And get the socom mini for the 300 black and 5.56. 700 dollars cheaper than the RC and much lighter and shorter.