S&W Published the performance data for their Cartridges, even as Winchester and others did for theirs.
I imagine most everyone was aware they were the same performance ( at the time ).
I really like .44 Special, and .44 Russian, and I wish I had gotten in to them a long time ago instead of being such a late bloomer.
I only have one .44 Special, which is an early production 2nd Model Hand Ejector.
Timing, Lock up, and Bore are great, finish is a little worn, Lol, and it is a joy to Shoot...
I did load up a Box of .44 Special in 3 F Swiss, but I have not tried them yet.
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They are my favorite Hand Gun Cartridges now.