One of our members told me he uses a paper clip that is correct size, and follows your drill pushing it through main charge to opposite side. I have two picks I purchased, one steel, one brass, that I won’t use, as they are both tapered. OK maybe if TH is really plugged with caked, and rammed down gunk, just to get hole started. But, I like the logic of flat ended, right size for fashion hole.Use a touch hole pick that is nearly the full size of the touch hole. I made one from heavy brass wire. You want the end flat, not pointed. After loading the barrel run the pick all the way into the hole, crunching through the powder until you hit the opposite side of the barrel. Then prime. If you don't feel the pick crunching the powder, you will know something is not right. When I started doing this I pretty much eliminated flash-in-the-pan.
Great tips here as usual.