You can actually get a lot of free load data from the manufacturers. Just E-Mail all the powder and component mfrs. and ask for free information. you will be suprised how much you will get in the mail.
Also the guys above know of what they speak. All your components need to be 100% specific for the load that you want.
I have a used Ponsness Warren Single Stage 375C that I am going to sell if you are interested. I can send you pictures if you want to see the press. I would need your E-Mail address, and I can E-Mail you the pictures. I do not have them loaded on photo-bucket.
I will sell the press for $125+shipping. It would be expensive to ship, but this is a great price. Tom.