Two identical weight rifles, is there a SIGNIFICANT difference in felt recoil between the 7MM STW and the 7MM RUM? I've owned and loved the STW BUT the Rem 700 SPS SS is not offerred in STW now, not that I can find. It's either 7 MM Mag or the RUM. If there's a major difference(punishing!) difference would you consider a rechamber on a 7 MM Mag to STW and tailor the rechamber to a specific load thats performed extremely well in your other STWs?