This may or may not help you. I have shot the 60gr. H.P. in my 6 mm Rem. My powder of choice is Varget. I also have begun to load the 58gr. V-Max. with the same data provided for the 60gr. I have the latest Sierra manual, let me know if you don't have it , I can send you some accuracy loads for the 60 in .243
Good Luck in your loading,
CF