Must be a problem with BB or DT. I´ve been using Speer Gold dots for a while with zero issues. I have however had some issue of that sort with CCI Blazer. A speer expert once told me they afix the bullets with something in the crimp to prevent setback issues. It used to be a serious issue at first--not anymore and recent ammo usage confirms this.
But I´d always go with Federal or Speer premium ammo for carry in 357 Sig. No problems.