Use Trail Boss powder it fills the case with lower pressures, a real joy to shoot.I am reloading reduced loads for 44 Spec/44 mag and 45 LC. Around 8 gr HP-38. Because the volume of powder takes up such a small space I want to place a thin cardboard wad over the powder to keep it in place. Any problems with that? I use a thin wad over powder in all my Black Powder loads with no probs. Anybody see any problems with smokeless?