You guys might find this interesting, my 104 year old farm house is southern yellow pine, and the wood is rock hard, no kidding. So Ive done extensive remodeling to it, adding/change rooms, new stair case, new joists/floors, including deleting two exterior doors, adding another on the other side, and changed out and resized 22 windows. So I have a mix of new pine, and old pine.
We've been using the 18v Milwaukee and Bosch impactors when driving screws. Allot of the framing is screwed together where 3-1/4 framing nails could not reach.
Anyhow, the wood is so hard, that R2, R2/P2 Combo, and #12 Torx will cam out if you try screwing them with a cordless drill, because the wood is so hard (resistance/torque) does not matter how hard you push while screwing. The impactors, will run up to 6" screws of any drive head into the old pine, no problem. When you go from the old pine, into an adjacent new pine board with the impactor, its like you screwing into butter, the screws just fly into the new wood. Its kind of crazy how well the impactor works.
We are even using them (impactors) to run 1-5/8s sheet rock screws with a P2 Drive, because my screw guns cam out, in the old wood, even with a screw that small and short.
One side note, the Bosch runs the screws quicker, but the battery features of the milwaukee are better. Both impactors where new at the start of the job. Also, they are loud enough when driving into very hard wood, that you might want ear plugs.
