In Conroe TX, is a company, Collins Cartridge Company. Web is
www.cccammo.com. They generally ship within 24 to 36 hours. They good people.
Parabellum Research is another gud un. I boughtn a case of 45acp, 1000 rounds for $300 several months ago. However, I spect their prices have gone up a little since then.
www.pbrammo.com
There is another one, up in San Antonio, but I don't know their name, sposed to be good.