use plain hss drill bits and mystic metal mover as a cutting fluid, don't use oil as it is worthless in this application. when the bit dulls, STOP DRILLING IMMEDIATELY or you will work harden the SOB so bad it will take you as long to finish one hole as it does the other 29. I cannot over-emphasize this, keep the bit sharp, and use a little slower feed than what TVP suggested, you'll reap the gain in tool life. (304 can heat up terribly under a high chip-load, the heat does not go out with the chip as in plain carbon steels.)