The following is from an official press release from Federal Premium Ammunition.
Immediate Action Required
Certain lots of recently manufactured 45 Auto ammunition may contain an incorrect propellant charge. Use of product from these lots may result in firearm damage and possible serious injury.
DO NOT USE PRODUCT FROM THE FOLLOWING LOTS:
* 38X628 through 38X765
* 38T491 through 38T414
If you have in your possession any 45 Auto with the following brand names and part numbers, check to see if your ammunition package contains the above lots: American Eagle (AE45A, AE45N1, or AE45A250), ChampionTM (WM5233), GoldMedal (GM45B), Hi-Shok (45C, 45D) and Federal Personal Defense (C45C, C45D). Example below:
THIS WARNING APPLIES ONLY TO THE LOTS LISTED ABOVE.
If you possess ammunition from any of these lots, or have questions concerning this warning, please call at 1-800-831-0850 or 1-800-322-2342 and ask for Product Service. Federal will provide replacement product and will cover the cost of returning the affected product.