SAAMI lists the 9mm round with a 147gr bullet. The old standards (1993) listed a Jacketed 9mm but the new 2015 standards do not mention bullets type. Lead, plated, jacketed or what ever. What they do list is a velocity and pressure. Actually 3 pressures, but I'll stick to the MAP or maximum average pressure. For a 147gr bullet they list a velocity of 985fps and a pressure of 35,000psi. Now it seems from that, I would work up a load for my 147gr bullet, whatever kind, to a maximum of 985fps and 35,000psi. Hodgdon data list a 147gr XTP, loaded with 4.1gr of 572, with a velocity of 954 and a pressure of 32,200psi and calls this a maximum load. Wouldn't you think that you could up the powder charge a little to get to the 985fps level for a maximum load? There are obviously other factors to consider, but what are they and is there any place to find that information.