586-6 Just what do the - number mean? I assume its the next version or run of the model. I just picked up a 586-6 4" barrel, Like new, barely a ring or mark on the cylinder, w/box for $450, which also included 2 boxes of 50, .38Spec and 1 full and one part box(38 rounds loaded plus empty brass) of Winchester X .357 Mag. Did I do good or not. I had come close to buying the M-28 LE roll stamped with the Montgomery PD for $1200, but y'all talked me out of it and I am glad y'all did. This was only about 1/3rd the price of that M-28, now I have $$$ left for powder/brass/bullets and primers and dies for this .357 mag