Too mainstream. Gotta do the WSM for science.
WSM with 215s/220s is easy to tune. It's similar to asking why not 6 Creedmoor with 112 Match Burners, when a BR/BRA with 105 Hybrids is easier to load for and get good accuracy. I shoot 130 Hybrids out of my 6.5x47 because they grouped better than the 140 hybrids. I might give up
some performance at 800+ with the 130s, but if I know what they're doing downrange, it's worth the lower BC to me. It's also worth not having to work as hard at load development. My 6mm x47 took over 100 rounds to find a suitable group for, vs my 6 BRA taking none whatsoever.
The Bench Rest crowd has been using long loaded WSM for ages, but the tactical/hunting guys have always dismissed it as a short action cartridge. SAAMI spec WSM sucks, but I don't shoot with anyone who uses SAAMI cartridges anyways. Everyone's using a custom barrel based on custom reamers. Say what you will about the benchrest guys, but they're good at finding easy to load for cartridge designs, and rolling with them.
To me the advantage of PRC is shooting 230+ grain bullets, but at that point, why not Norma? Both the Norma and the WSM do what the PRC can do in the lower weights and higher weights, but arguably do it better.
If I were serious about the 1800+ stuff, I'd skip PRC and Norma altogether and get a 33XC or similar.
