I’ve been loading this bullet to 1.135 with absolutely no problems , UNTIL the day my daughter brought her new Springer EMP home . With factory ammo , no problems , with my reloaded ammo its as you described , a” jam-o-matic” . I figured out it is a tight chamber , so I bought a Lee undersized pistol die  and a 9mm case guage . Now all my reloaded 9mm is sized with the undersize die and checked with the case guage . If the case guages correctly and falls out  on its own when I turn it over , it will function flawlessly in her gun . If it is a little “fat” and wont fall out of the  guage correctly , then it gets fired in any of our other 9’s .    When you use once fired brass you have to take the good with the bad , and what I think is happening  is some of the cases are fired from large chambers like Glocks . I would say that about 5 to 10 % of my cases wont resize and guage small enough for her gun ,so these boxes are marked “NO EMP”.     It is kind of a pain but really not that big of a deal , besides that little 3″ EMP is really a tackdriver and I wish I would have bought one.