I reload my shot shells and have a couple of cases that I loaded some time around 1985 I recently bought a new trap launcher and decided to try them out. I had no issues whatsoever and keep in mind they were home loaded and factory ammo would even be less worrisome. They all fired perfectly. On a side note, it sounds like you haven't had much experience with the gun and if you plan on using it for home defense I would strongly advise you to get some formal training. You are fooling yourself if you think you'll be able to wake up in the middle of the night and successfully defend yourself or your family
NRA Life Member, JPFO member, NAGR member, 2nd Amendment Foundation member and Life Member of Vietnam Veterans of America, Chapter 996