I use to have a Beretta 391 in 20 gauge. I bought a 100-round box of Federal ammo at Wal-Mart and the gun jammed most of the time with it. I bought a 20 round box of Winchester and a 20 round box of Remington ammo and they both worked fine. I eventually sold the Beretta because I didn't shoot it very well.
I've had several people tell me that they've had problems with the cheap Federal shotgun ammo out of a semi-auto and to stick with Winchester or Remington.
