Oh, that's different.
"Never mind."
Slap me silly and call me stupid. I knew about the Model 29, and later the .44 Automag, but I did not know about the Serpico/High Power connection. Now your post makes more sense (as all your posts do.)
I was a wimp and got me a Model 19 Combat Magnum instead.
The 19 is a great gun. Somehow all of mine drifted away while I was on an .44 Special N frame kick - so call me extra stupid. :) Bill Jordan was key in it’s development. I’ve got a signed and personalized copy of his “No Second Place Winner.”