From a biomechanical point of view, be carefull of how you bend fingers!
Starting from left to right;
The first finger (not thumb) moves independently, but the following two fingers use the same tendon for movement (I hope my biomechanics lecturer doesn't read this!). If you put your hands together, and fold both of your 2nd fingers inbetween them, you can't move your ring finger, which shows this well.
At high poundages, I would be very wary of doing anything but keeping my fingers straight (I shoot 50#) as you could damage your lower arm muscles/tendons.
Just a thought, Kae.