RE: .45 acp ammo
Briman, you've got to remember he's shooting a Ruger here....first off, it's bombproof, and secondly, it's not a $700 gun!!! The most I ever paid for a Ruger P-series was $328...and I'd certainly put my p series guns up against any of my higher priced factory guns!!!!
Anyway, Wolf is dirt cheap, and pretty dirty, but for low cost plinking, it's not going to hurt your gun. The only complaints I've had with Magtech is that I get gas blowback around the primer quite a bit that has pitted a few bolt faces on my guns. These aren't accuracy hounds by any means, but they're not going to hurt your gun if you just want to get some lead down range.
Winchester white box ammo is a pretty good deal. It's often on sale two for one around here, typically I pay something around $15/100 for it.
If you really want to start saving money, start reloading, you can get precision ammo for cheaper than the cheapest of plinking ammo that way.