Summary: i am a commercial carpenter working with metal framing. i got this gun and used it to hang exterior sheeting. the gun works great on lighter or even medium gauge metal. it zips the self tappers right in. but...... the gun is worthless on heavy 12 g metal. it is to powerfull and tears up the tip of the screw. i havent used it on wood but id bet that it would be great. it does really well on light gauge interior studs too.