My primary carry is a Glock 23, .40 cal. I also have a Glock 43, 9 mm. My comments relate to the latter handgun. I use 9 mm 115 grain +P FMJ primarily for practice on the range. For personal protection I use 9 mm 124 grain +P JHP. I've owned the Glock 43 for six months and have fired approximately 1,500 rounds on the range and in the field. I have noticed little or no difference in the performance of the two aforementioned loads. Comments?