I haven't tried it with 150 but I use 90 gr for 162 eld x @3350 summer or winter and have had no problem and seen no pressure signs either I realy like haven't even tried another powder in mine
can you post a picture of your log page so I canat least get a mental pic of what I need right now I just write the gun and vel yards and where from point of aim I hit in a note book got some heavy paper to make some that will be better outdoors in weather but don't know what all I should have...