No pre-drilling. 5” screw. c.200 Nm of torque. 25mm PZ3 (Metabo) bit. Magnetic Milwaukee bit holder.
The bits break first, by design. The bit holder hardly ever breaks. Never broken the gun.
It’s horses for courses at the end of the day. “If it works, it works” is the mantra I was brought up around.








As I understand it gold is used as it doesn’t tarnish or corrode - it’s not there to benefit the sound in any way.