I have a GP100 and they are pretty much bullet proof. Very sturdy, easy to take apart and clean, will handle any factory +P+ ammo you can stuff into it and they are pretty accurate right out of the box. The only down side to them is that they are heavy but it's the price you pay for having a sturdy revolver.
With a steady diet of +P ammo your Ruger will still be going strong years after a Smith has rattled loose.
I haven't hunted with it or any of my .357's for that matter as I have (I feel) better choices of calibers in my possession to choose from. Not to say it won't do the job on deer sized game, it will but choose your ammo wisely.
Here in Illinois they have a minimum requirement for hunting with pistols (caliber size and muzzle energy) and the .357 is just makes the grade.
If you are using it for larger game, you would be much better off with a .44mag, +p.45 Colt, 454, .480 Ruger, 500SW, etc...
Congrats on the new revolver......