How can I tell if the speed loaders a friend gave me, are four a Ruger Redhawk or Smith & Wesson! He new I had a .41 Ruger didn't realize mine was a Blackhawk. They each were ready with .41 factory loads! He thinks they were for a ruger, but can't remember. I don't have a place to try them!

Is there not a model number engraved somewhere on the loader?

I have both guns...the #57 HKS Speed Loader fits both..

Why not just try it and see if it works?

Thanks they have H.K.S 57,with patent number. Now the question to myself, get a revolver they fit or get rid of them.

If they fit one they fit the other

Send them to me. I'll take that problem off your hands.

👍👍

This. Those made for K-Frame S&Ws all work perfectly with Colt Detective Specials and Police Positives, even though that's not advertised. If it works, it works.

That's a foolish question. There are much worse reasons for getting a new gun

By the way, the .44 mag speedloaders I have fit my N frame Smiths and my Ruger Redhawk.