I was mistaken.
I load 90 Grain XTP's and also 92 grain lead Meister Round Nose.
Both those loads I use Red Dot at 2.8 grains, they both work flawlessly through my LCP. From what I remember shooting them, they are a bit calmer than factory loads.
I'm sorry, I do not have the starting load as it is not listed in the manual. I worked up to 2.8 and am getting 846 FPS with the XTP and 826 FPS with the heavier Meister.
For the XTP, I also use Power Pistol at 4.6g with a velocity of 877 FPS.
As with all loads, work up carefully, looking for signs of high pressure.