Originally Posted by Bobd314
I think basically the center of the valve chamber and the center of the ram area aren't the same.
Correct. In all other guns the valve chamber and the rammer on the same axis. In th 09 we split the 2 axis. The rammer sits closer to the bottom of the bolt bore, connecting the bolt and rammer with a much shorter pin. Reduces the leverage forces on the bolt and rammer. The valve chamber is in the same place it was before.