Something else to keep in mind with those old loads (besides the fact that the powders have changed a lot). With N frame S&W or Ruger Blackhawks it isn't that much of a problem, but a steady diet of those loads does, to a lesser extent have the problem that killed the .357 Maximum loads, barrel throat erosion is pretty bad. In a K or L frame sized gun it becomes a major problem quickly. I played around with some pretty hot .357 Mag loads in a 27-2, loading six of each charge and examining the case after the first shot for any pressure signs. I never got any signs of a problem from the gun or the brass, but my hand, and the other shooters at the range, started objecting for the last three sets!
