I have a small powder primer that throws 1-3 grs. My pan is narrow n shallow, so i use about a gr in it. I make sure its powder is to the outside of pan when i squeeze trigger. I have a TOW new vent i have drilled out to 1/16". Betting my Frizzen spring is too stiff. I am thinking my flint hits n breaks because of that. I will have to take my lock off n file n polish itInteresting I use English flint. The only change I did was to use a aftermarket vent sleeve with a flat face on the touch hole I bought from Track of the Wolf. I got about eight shots on that one flint and I only stopped because it was 4pm and the range closed. I was over filling the pan with 4f though. I bought a new pan powder horn. It dispenses a lot more powder at once more easily than the one it replaced so I am getting used to it.