I have had the same experience with the all versions of the MA 9mm sizing dies when loading jacketed bullets. I was seeing a high percentage of my FMJ rounds failing from easy push back of the bullet. The latest TNT dies is an improvement, but I am still seeing a small percentage of rounds unable to provide correct tension to hold an FMJ. Its completely useless to me for reloading FMJ.
Now, loading lead or coated bullets is a different story. The die works perfectly due to the 0.001 larger diameter of most lead or coated bullets. The downside is having to lube my brass to reload. I end up with dirty rounds due to the lube. No way i am re-tumbling 9mm rounds to clean them. The only reason i continue to use the MA dies is the decapper. It is the best, most reliable decapper system of any die manufacture (IMO). For me, it worth having dirty rounds to ensure 100% of my brass is properly decapped on my press. NO more big BANG surprises.
That, said, I may give the Redding 9mm sizer, decapper a try at some point in the future. Otherwise I need to go back to my Lee U die if i want to reload FMJ's.