I ran my first batch of 44 mag over the chrony and did some accuracy testing. When I got home and started cleaning the gun I noticed quite a bit of leading, well after a much painful session with patches, brushes and solvents I finally got it cleaned up. I'm using a Missouri Bullet 240 gr. that has a 18 bhn. What would be the best velocity to push these at to prevent or lessen leading? Or is it a powder/bullet combination that I should be looking at?