I have just got been offered some cheap solid ball for my 12g BP smoothbore. I usually use it with shot but 200 ball for £10 was too good to resist! What BP charge would people with experience use please? The gun is proofed to 1 1/4 oz shot and 3 1/4 drams BP. The balls weigh less than 1 1/4 oz. I would be very grateful for any ideas for a starting load.