I am making some loads for my buddy using 500gr hard cast, gas checked slugs and Lil Gun powder. Now I am being told not to use Lil Gun due to forcing cone erosion issues. When I did a Google search on the 500 magnum and Lil Gun, I found many a thread extolling the virtues of LG. Use it? Don't use it? Should I pull the 50 rounds I already have seated? Thanks guys!