For 30 plus years I have been shooting 44 Mag with a 240 Hard Cast and 10 Gr of Unique and 45 Colt with a 250 Gr Hard Cast and 9 Gr of Unique. While not magnum loads both had fairly stiff fecoil that had no affect on me. Now I have loaded 10 MM per Brian Pierce's advice in Handloader with 5.4 Gr of Tite Group and a 180 Gr Hornady jacketed
bullet. This is my new Springfield XDM. I know this has an empty weight of about 28 oz. but, still I never thought it would have this much recoil. I am an expreinced hand gunner of many decades and used to recoil. I wonder if my age of 74 years is catching up with me or maybe the 10 MM is has more power then I have ever read about. It is not about artheritis no pain there but just significant recoil.