Is hand nailing more stable than power nailing for rough framing?
In the early days of air nailers hand nailing was better because the heads were moon shaped. I believe the moon shape was outlawed but not sure, but full round heads used with a properly adjusted gun are just as good in my opinion. If you think 
hammers are better to save your arm set the gun so the head sits up 1/8 inch and finish it off with the hammer. Go