Well I only shoot CAS part time so maybe I am not the most qualified shooter to answer this. Here goes, depends on how many calibers Ruger decides to offer on the New RV(45-357 are current production?) ,perhaps the shooters of Colt clones make the jump to Ruger for reliability and strength? I have set of old Ruger RV (45) that I would not part with. I am not so sure you going to see that many of the old Ruger RV sold,traded, the pards that shoot 38-40or44-40, probably will not go for the New RV. Mainly because they are not currently in production. Most likely, wait and see situation? There is also the strength factor,NEW RV laod to only normal SAAMI specs, with OLD RV seen loads go off the charts. This is just my thoughts ...Respectfully Montanadan.