Alliant's load data format is severely lacking. They just list the max. The Lyman manuals do a good job of covering Alliant powders and I would recommend getting one. Mine lists 4.4 to 5.8 for 115 grain jacketed HP. 5.8 grains is listed as having 30,700 CUP as the pressure. 6.0 might be fine but I certainly wouldn't start there with a lead bullet. You'll probably have much better luck with accuracy in the 4.4 to 5.0 range.