Just for interest, here's a pic I've tossed up before: BP loads in transluscent 67mm hulls by RC4. Easy to see the powder/wad/shot column.



This clay-target recipe is 75gr FFg, heavy grey card over-powder wad, 1/2-inch Wonder-lube soaked fibre wad, thin card wad, 1oz shot, thin card over-shot wad, roll-crimped. I substitute 85gr FFg and bismuth shot out on the swamps.