What is remarkable about the .327 magnum is the recoil. The Ruger SP101, with 3" barrel, is all SS and weighs substantially more than the R9. Ruger quality is conspicuous; the best I have ever owned. But, I hate the front sight which is too high, (like S&W revolvers), and accuracy suffers.
I am not suggesting that the .327 magnum is going to challenge the .454 Casull but recoil is stout, given the weight of the gun.
S&W plans to come out with a J frame .327 magnum but I wouldn't hold my breath. And, if they use that lightweight alloy, I wouldn't want to own one.
For me, as with my other revolvers, they are taken to the range more often than carried.