Squib308 reported: concur feels like an ammo difficulty. perhaps the brass is bulging? have you inspected the winchester brass in advance of vs. after firing? MGL Chapter a hundred and forty said: “Huge capability weapon”, any firearm, rifle or shotgun: (i) that is certainly semiautomatic with a hard and fast https://highimpactrounds.com/product/mossberg-590a1-tactical-12-ga-20in-8rd/