I have kind of tried all the tricks I know, and exhausted the local advice as well. But I can not get this rifle to fire. I washed it with hot water and dried it out, I have cleaned the nipple hole, installed new recommended nipple, and am using the recommended cap. Tested the powder. But can not get it to fire. I picked this gun up cheap at an auction and can not figure out if I am doing something wrong or something else is wrong with the design. I even thought of modifying the nipple hole. Any suggestions. I use the same procedures on the tc .50 cal smooth bore and it fires every time. Thanks