Looking to add an intermediate magnum and have narrowed it down to these two cartridges. The advantages of the PRC is I can get off the shelf prefit barrels for my action, and it’s popular so parts are available, multiple brass options, etc. The cons are I’ve heard the Berger 156s really should be in a long action. The Sherman short can run the 156s in a true short action length, cons are the 40* shoulders can struggle a bit with mag feeding, it’s a more obscure cartridge and I believe it’s not SAAMI. Lapua brass vs the ADG brass on Sherman’s website are about the same cost. Planning to reload for both, planning to run a 20-22” barrel with a can, and load using H1000