I load a lot of Berry's and Xtreme 124gr plated bullets using Hodgdon HP-38 which is the same powder. Starting load is listed as 3.9gr but I had to bump it to 4.0gr as the starting load wouldn't completely cycle my PT92. I mostly load with a Lee Auto Disk measure and using cavity # .40 it drops a consistent load of between 4.1 and 4.15gr. which is about the middle load. It has been clean, low flash and very accurate in both my PT92C and my wife's XD Mod2 4.0.. I did load a box at 4.3gr and couldn't tell a bit of difference between that and the 4.15gr load. I've tried the Lee disk # .43 and it was about .1gr over listed max. but am guessing still well within the +P range.