this is an old post, but i thought i would add my finding. I tested the full range with 230g RN Berry plated with WST, and came with the max load, 4.9 being the best, most accurate, softest shooting, and right around 785FPS out of my full size M&P. No pressure signs, bullets holding together great, overall very good load, but work up to it in your gun as this is what works best in mine.