Stay away from Wolf ammo. I've hardly ever heard of anyone who had good experiance with it.
Than brace yourself..There is nothing wrong with Wolf ammo. Ever wonder why you never see pictures of the weapons blowing up from Wolf ammo? Or why you never hear first hand accounts of the problems with Wolf ammo, but instead you always hear it on an internet board or a guy who heard it from another guy, who's uncle's cousins, nephew had Wolf brand blow up his M1A1 SOCOM.
For a long time I believed the hearsay about how Wolf was bad, it will mess up your AR-15, Glock, H&K, M1A1, Jeep

..ect. I now know all that buzz to be bunk. I have put thousands of Wolf brand ammo though my AR-15 and I have put ten's of thousands of round of Wolf brand ammo though various pistols I own and more rounds of Wolf ammo than I care to keep track of though my SKS and AK's. I have had no problems with the ammo, other than some bad primers. In the AK's and SKS's, I have had a handful of broken shells, but that is why they make broken shell extractors.
I would not recommend Wolf ammo for defense, but it is fantastic ammo for what it is, cheap target ammo. It is a little dirty, but to be honest, I don't notice much of a difference between Wolf and Win White box when it comes to how dirty the ammo is.
Check the stuff out. Take the plunge you will be glad you did.