N/A What is the advantage of a heavier hammer?

As I had an accident and a operation on my right wrist, I did not yet do anything to make and install a heavier hammer. What I did do is a lot of reading. Some say they had problems with heavier hammers that bent the valve stem at high reg pressure. Since I don't know if I can find new parts for this rifle if the does bend the valve and damage the valve body, I decided to not push it any further.

Like I said before, it is not that I need the extra power, it is just interesting to see what it can do. As it is now it delivers 55fpe at the muzzle and for a 5.5mm rifle it is not to shabby.

Thanks for all who replied here.