Re: 4" GP100
I have a 4" 357 by Rossi. I love it. My experience with Ruger revolvers is excellent, my mom's glove-box gun is a 4" barreled Service Six in 357.
With hot loads, it's a fireball machine, but recoil isn't too bad and the Rugers all seem to shoot well from the half dozen or so in my family.