PM, have you tried any of the high-energy loadings for your '06? With one of these throwing a premium 180 grain bullet you should be fine on any moose out to 250 yards or more if you practice enough. Putting the bullet where it needs to go is the most important factor of all. I would save the money and use it for something else, especially since you don't use your rifle all that often anyway. Not that I am trying to talk you out of a new gun if you have the extra cash though! Best of luck!