dsheally hit the mark. A heavier tip creates more resistance on the arrow. This will cause the arrow to flex a bit more then the 100 gr. tip. Many bows will actually shoot more consistent and tighter groups with this added weight. In a hunting situation, more weight is more kinetic energy. I have found that my bows will tune much easier with a heavier tip.Quite often the bow will be much quieter and will have much less recoil and vibration. If you shoot 3-D targets, less weight is preferred to increase arrow speed, just in case you misjudge a long shot. I think you will enjoy the difference. Oh! P.S. You think your 100 gr. did a job on your trolling motor battery, take a crack at it with a 125