When I was a Deputy, this was back in the revolver days, I carried a 357, defense loads are almost universally nickel plated, and we were required to change ammo every few months to make sure the carry loads were fresh, and we shot up the previous carry rounds. It was not uncommon to see 3 or 4 split necks (in a box of 50) on nickel brass after the first firing, not unusual at all. This was common in all brands of ammo I carried, which were mostly Remington, Winchester or Federal, so it wasn't just one brand, and it was in several different pistols I carried over the years, a model 15 in 38 special, two different model 19's, one blue, one nickel plated, and a model 66, so it wasn't the pistol.
As you would reload that nickel brass, you would lose 3 or 4 with every loading to neck splits, so when you had several boxes you were loading you would have to designate one box for replacement cases since so many were splitting. I never reloaded 9mm or 45 acp nickel cases, so I don't know how they might fare, but in 357 and 38 special they were pretty bad, you had to carefully inspect every case after firing and again after loading since once in a while you would get one to split during reloading.
Split necks on plain 38 or 357 brass cases were rare.