For the 9mm load my Lyman manual list that as a very near maximum load. The starting load is listed at 3.9 and a max of 4.5 grains. With a COL of 1.075 as a do not seat shorter than that or a spike in pressure can happen.
I would recomend starting the .38 spcl. using a listed starting load, and working up. Lyman list a starting load of 3.0 grains, and a max of 3.4 grains with a COL of 1.445 inches. .38 special is probably the esiest round to begin loading with.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.