Headspacing isn't the issue, bullets touching the lands is.
You really think that the bullet in a 9mm is engaging the lands of a handgun at 1.049"?
Sorry, but I seriously doubt that's the case. I almost guarantee that this is a headspacing problem caused by either: 1) Improper sizing, 2) Excessive Flare, or 3) Insufficient or Excessive Crimp. And if by some chance it's none of those and indeed the OAL is causing problems, then it's because that OAL is screwing with the correct headspace and not because it's engaging the lands. It's just not gonna happen at that length in a handgun.