Re: FFFF down the shoot first ???
If you have a proper touch hole and flash channel behind it, there is positively no need for any 4fg with 2 fg in the main charge. The idea of the liner is to let a bit of the main charge work back the flash channel and be exposed in the touch hole and next to the flash pan. There shouldn't be any funneling of the flash. a few grains of the main charge should be right there within a millimeter of the barrel flat and just above the bottom of the flash pan.