A powders dont seem very popular around here so I never see it here. That 2200 I bought was at gun shop 2hrs away. I had crazy spreads in velocities when I first started loading for it....in the neighborhood of 6-700 fps....its was ridiculous. I changed primers and it got alot better (250ish sometimes) but not great. Im gonna work more with the 2200 because my velocities were way more consistent.
That 1680 sounds really good.
Scooter