What tooling to drill lots of 10mm holes 45mm deep?

[JAZZCNC]

Thru drill like you posted will work resonably ok but depending on material and grain structure you will still possibly get some breakout.

Milling Holes is too slow and isn't often done for holes this size and in wood. Much quicker to drill just past half way with No or few Peck's then flip material and use same G-code.
This is really the only way you can guarantee no tear and If you find the Drill/Counter bore you need then this will save loads of time.

Also there's nothing wrong with using a Hand drill for drilling, that's what it's designed to do, just don't try using it for Milling that's when you have trouble.!