500,
It is the regulation load that Butch uses, 108 grs. of IMR-4831, Butch told me it clocked that on his chronograpeh while regulating, and it clocked right at that for me also..But my new load is 85 grs. of RL-15, topped with 5 grs. of Dacron, for 2020 FPS and it sure feels better and prints dead center at 50 yards also...I finally settled on a 500 gr. cast lead bullet with 45 grs. of XMP-5744 and its dead center at 50...All 3 loads are super accurate and normally touch both bullets at 50...

The RL-15 load with GS FN solids will be my Africa load..I had a few Bridgers and they shot good, but thats a done deal I guess...