What are you shooting (gun make/model/barrel length)?
What bullets are you using (lead/plated/jacketed) and what weight. You said IPSC so I'll guess jacketed.... 180 grn?
Do you have any powder or primers yet, if so, what?
Will you be using a progressive loader (Dillion/RCBS/.. or?) or a single stage?
Just a few questions to get us going in the right direction for you. There will more questions to follow your replies to these questions, then you'll get some good advice.