I built the 416 RUM specifically to go on a brown bear hunt in Alaska next year which fell through for various reasons. I was going to get another Legend stock from Darcy but that proved to be problematic so I just put it in the wood stock I had (Long interesting story behind this stock).
I built it with the 350gr Barnes TTSX in mind and with RL17 2800fps in a 3.6" mag box is very realistic and I know some that have pushed them to 2900fps with longer OAL (duplicates 416 WBY for the sadists). At 2800fps sighted in 1.85" high at 100 its dead on at 200 and drops less than 8" to 300, and 23" at 400. Pretty much mimics the trajectory of a 30-06 loaded with a high BC 180gr bullet and generates over 6k lbs of energy at muzzle. The 375 RUM case got a bum wrap mainly because it was only chambered in 7.5lb Rem 700 push feeds with 13.5" LOP that kicked the snot out of people. Built on a 9-10lb CRF by someone that can make them feed they are great rifles.