My 7PRC is in a Manners PH, great stock. Shoots well, handles the recoil well. I shoot suppressed. I also have an XLR Element 4.0 magnesium that is inletted for the same action. The felt recoil, suppressed, for my 300PRC and 7PRC in the XLR chassis makes it not fun to shoot, my Manners PH stocks are substantially better. However, I imagine with a good break it would fine.
As far as barrels I now stick with cut barrels. All my cut barrels (Benchmark, CRB, Bartlein and Proof) have been very accurate. My only button barrels, 2 CarbonSix are so so at best, however they are comparatively inexpensive. To me the extra cost to go quality cut barrel is worth it.