I'd ago with Altamont also, they make a very nice set of stocks for most any revolver.
If you are wanting factory stocks, you're gonna pay big to get them. they are a whole 'nuther class of collectible, with ever-increasing value.
I put a set of walnut Altamont stocks on my M28-2, and removed the perfect-condition magna's to keep them that way. The larger Altamont stocks aren't as thick in the middle as the factory target stocks, and have finger cutouts; they fit my hand perfectly (size 8 glove).
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They make much fancier stocks than those, here's a set of rosewood stocks I have on my M19-3:
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and another set of rosewoods on my M57:
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I paid from $60 to $85 a set, which is less for all three than a single set of nice factory GA target stocks