I currently load 44 special using 44 magnum cases, therefore upping the charge a bit for the larger case. Loading Hornady XTP 200 gr with 8 gr of HP-38, and it's proven to be a nice load with less kick for my Dad to use. The cast bullets I have in mind are 210 gr RN-FP. Any powder charge suggestions? I was planning on starting at 6 gr.