Josh,
My stealth has run every type of 9mm fed it except for Hornady Critical Defense, which did what yours did with the Winchester. It would fire off some rounds first trigger pull, some took multiple strikes, and some others only fired when recycled through a Glock.
I learned that the Critical defense does indeed have hard primers, and relegated it to other firearms.
Mine did fine with Winchester "white box" fmj.
I have since decided to only use my chosen carry ammo even for practice. I have been using the recommended Speer 124 grain Gold Dot.
After Shooting the Bull got the best results in his short barrel 9mm ammo quest with Federal HST 124 grain, I bought up a supply of it, and may switch to it if it runs well. His videos are on YouTube.
I recommend finding a good quality hollow point that runs perfectly in your personal r9 and using it exclusively.