I do only own one .44 mag, a pre-29 that I bought used 47 years ago for $150.00. It will go to one of the grand kids some day. I have carried it all these years and it is shy about 20% of it's blueing. Have lately been thinking about sending it back to S&W to be re-furbished/reblued.
Please don't do it! Smith's current bluing is nice but not comparable that those classic guns.
A bit of beautiful craftmanship from a bygone era is lost when people reblue those guns.