What are some good bulk bullet suppliers?

I need to get loading for the .45ACP and would like to buy 230gr FMJ in 500 to 1000 pc quantities. Not many places locally seem to stock much reloading components other than Gander Mtn.

Also, anyone have any pet target loads for .45ACP that would work well with a Springfield Micro Compact 1911 (3" barrel)? I need to get proficient with this gun and a should be able to cut some costs by reloading my practice ammo.

Thanks!