Check out Swiss made RWS ammo. You can get deals on cheap 1000 packs online for JSPs, although they can be hard to find. You probably don't really need 2,000 JHP$...
GA Arms is a quality small ammo manu also.
Mauser Werke, Schmidt-Rubin, Colt, Walther, HK, Weatherby, Browning, Ruger, Beretta, Savage, Bushmaster, Marlin, Mossberg, Remington, PTR, Saiga, S&W, Sig Sauer....a few friends of mine