How to drill faster in brass

[Boyan Silyavski]

Hi,
have to drill a lot of holes in brass, on the CNC i mean. 3mm as i thread them later to M4. Something similar to grounding bars , where each piece has 15 M4+15 3mm pass trough holes.

Till now i was drilling them using 3mm mill and 16000rpm feed rate like 15ipm and some pech tool path for the sticky chips to go out, which is leftover from the time when i did not use brass bar but very gummy aluminum bars. But now i have 500x30=15000 holes to make so have to speed up quite a bit.

Any ideas? if i remove the peck drilling path things will be speeded, but is it needed for brass ? 8mm square brass bar. Normally i use 2 flute spiral 30 degree fishtail 3mm bit. Problem is i am busy with other work so no time for experiments.