Worse than just the weight is the fact that being on the end you get a leverage effect. If the pad was at the hinge pin, or normal balance point, it would only make the gun heavier, not change the balance. Being on the end of one arm of a leverover a fulcrum it has maximum effect on the other end. We feel the change. To rebalance you can either remove weight from the butt stock or sometimes add weight to the barrels. Trying to make things simple you could look for a light pad but most of the time we are either looking for a proper period type pad or one for length which restricts our options.