Originally Posted by kmca
If you have the proper crimp now, reseating the bullet deeper shouldn't shave anything, especially if they are plated. I've never had good luck trying to pull either lead or plated bullets with a collet type puller. If you had put a roll crimp on those bullets, then you might have a problem.
What he said, but 9mm should not be roll crimp. Ever. It headspaces off the case mouth.
If you did the proper "removing the bell" (taper crimp) you should be able to seat the lead bullets deeper with little to no shaving.