The drawback is that it's not really 308 class as far as COAL is concerned. The PRC spec is 2.755 to 2.955" and we would be using the full 2.95 wouldn't we ?
It’s Official — SAAMI Approves Hornady 6.5 PRC and 300 PRC « Daily Bulletin
So it needs a 3006 length action. (3.340")
6.5 PRC Bolt face is 0.532" same as 7mm rem mag
308 0.4728"
270 and 300 WSM rim 0.532 but case 0.555" COAL up to 2.860"
It looks as if the 6.5 PRC would fit into a Sako short magnum action / mag feed system although you could be limited in length and need to load it down.