I carry with the 147 grain HST in my LC9s and one distinct positive for this weight in my pistol is that the sights seem to be regulated for a 147 grain bullet. BTW, determined that my doing some testing with commercial 115 and 124 grain 9mm and both weights shot low. Ordered some 147 grain RN plated bullets from Extreme and the sights were dead on perfect just like when I tested some of the HST for function. Now I need to order some more of the 147 grain bullets because I already know that the 900 I have left won't be enough, while it has some snap to it I've found the LC9s to be a fun shooter and quite accurate when you aren't using a lot of holdover.

BTW, at this point I have a bit more than 700 rounds downrange and have not had one single failure of any description with the LC9s.