...1/2" deep x .100 dia Alum6061T6 ...4000Rpms with flood oil/coolant at 20ipm and peck once..1st pass about 3/8 deep>>>Retract to Z0 to cool the drill tip then. finish the 1/2" deep. Screw machine type drill work best HSS and cheaper and tougher to break.
https://www.mcmaster.com/screw-machine-drill-bits/
If, you are brave try one pass...lol
Is good start point..old school may be slower...but, less broken burned up stuff in the long run. 10cent drill broken off in 1000 dollar part cost...you do the math.