Is there a Ruger RPR in 300WM? I thought they only came in 308 and 6.5creedmore. Just to let you know, the RPR has a barrel nut and as far as I know that’s the only Ruger that uses them right now. I could be wrong but make sure it’s not just an old Ruger takeoff. They have a shoulder on the barrel and they won’t headspace. Rugers have a shorter tenon that a Win70.