I bought one last summer and I love shooting it with both 9mm and 38spcl. I sometime shoot .357 magnums but for the kind of shooting that I enjoy which is mostly informal plinking, I have most fun with 9mm and 38spcl.
I did notice that with the Remington 9mm 90gr MC ammo that I used last summer that about half of the primers showed some sign of small tearing at the indent, as if the firing pin was over-penetrating them. Other than noticing the way that the used 9mm brass appeared, I had no trouble at all resulting from this issue. I remember the Ruger manual makes some mention of this, and I just downloaded the manual from Ruger so I can quote it here for you:
"Notes on Revolvers Chambered for 9mm or .30 Carbine: Because 9mm
cartridges are manufactured worldwide for use in pistols, revolvers, and
submachine guns, it is possible to encounter cartridges which, when fired,
develop pierced primers. If this occurs, discontinue the use of the particular
brand or type of ammunition. The possibility of a pierced primer is another
compelling reason why a shooter should always wear protective glasses to shield his eyes."
Again, I will repeat that I did not have any issue with the pierced primer other than noticing it and worrying a small bit about it. But following the manual's advice I guess I'll shop for another brand of 9mm to fit my Blackhawk. I use the same Remington ammo in my semi-auto handguns with no issue at all.
I just looked at some notes I kept, and I paid $350 in July 2008 for my Blackhawk brand new. Honestly that price seems like such a bargain today since I love this gun so much. Also I kept track of ammo prices and at the same time I was paying 18 cents per 9mm round of bulk 250 box of Remington ammo. I wish I could even find 9mm ammo today!