Hogdon website has listed loads for many calibers and combinations, but I don't recall or see where they stipulate a "max load". However, for 54 caliber the heavist load listed is with 2F at 120 grains.
My 54 caliber Hawken with 1 in 66 begins to loose accuracy at 110 grains of T7 2F and is best at 100 grains.
