LDBennett is right. Your load is too low. When I was working up a load for my Beretta 92 in 9 I started very low, as usual, and the first group would not even push the slide far enough to pick up the next bullet. I increased the charge slowly until I got a velocity close to what I was after.
In short, start increasing your charge until you get satisfactory cycling of the pistol. I would also highly recommend using a chrony to see what velocity you are getting. I would bet your current load is probably about 700 fps or maybe even lower. Factory should be about 1050 fps. A chrony is something I consider an absolute necessity in working up any load.
One thing you did right was start low. Too many guys start high thinking that will work fine. Sometimes it doesn't!