Marv Stenhammer, a security consultant, retired Special Ops soldier, and generally knowledgeable guy, claims that WOLF ammo should be avoided. His words on one Sig list are:
> > Wolfy goes bang, but it is VERY corrosive and has a lot of nasty chemicals and lead in it. Not recomended for indoor shooting and be careful when you clean the gun not to get that residue on you and your family.>>
You can buy high quality 9mm hardball from IMI, Sellier & Bellot, PMP, Denel and Magtech in the $5 - $6 a box range, plus shipping (and $110 - $130 per case, shipped) so why risk using arguably dangerous and corrosive ammo?