As metioned before I'm biased towards Ruger.Huh F4YG.LOL.You might be able to findout who made that Western Field by going to
http://www.e-gunparts.com/crossref.asp If the Ruger fits you I say go for it.As mentioned you can findout when the Ruger was made.Go to www.ruger-firearms.com click on firearms then product service.Have the model and S/N. It will tell you what year it was made according to the range of your S/N.

The little 44 carbines were nice guns.I might mention I read on
the rugerforum, Ruger will no longer work on these.They've been out of production for several years.

Hope this helps you.

Ruger Redhawk