My sons didnt like Monarch brass at all. FTF, FTE, 10 out of the 100 I fired did not even push back the slide after they were fired. Switched over to WWB 115grain, 200 rounds no hiccups at all. Excellent handgun, your going to love it. Congrats.
Bought an SD9 for my son, Christmas Gift. An awesome weapon. trading in my Glock 17 for one. Tack driver with Winchester White Box 115grain. Does not like Monarch 9mm brass. Kudos to Smith&Wesson. Love it.