Put the old hammer spring back in the gun and try it.
I suspect that since it's been changed out to a new Wolff spring, the hammer fall is now heavy enough to punch the FP deeply into the primers to have a few of them pierce. Even the ones that didn't pierce look very deeply struck. No need for that deep of an imprint to simply fire the primer.
Unless the original was very weak and either not firing the pistol or not giving sufficient resistance to the recoiling bolt to avoid frame battering, I'd leave it alone
Could be the primer cups are softer than normal, could be the firing pin spring is a bit weaker than a new one too,,but with nothing else in the gun changed (other than recoil spring and that isn't involved), I'd suspect a heavier than needed hammer fall(at least with that ammo).
Pull the firing pin back out again and check the tip for any damage, chips, ect.
Make sure the tip hasn't been filed or turned down a little to a smaller diameter during an earlier repair of a bent or damaged tip. Sometimes done after straightening a FP tip to true it up a little. But too much and it becomes an ice-pick of the firing pin and will pierce primers more easily.
I'd leave the new recoil spring you put in already,,that'll help protect from bolt stop battering,.
While it's out, may as well put the new firing pin spring in on the front of the pin. It's real job is keep the FP in the rebound position but it does offer some resistance to the hammer fall upon firing so a proper weight one will help somewhat to avoid the problem.
