I recently bought a winchester 1200 in 20 gauge from a dealer. I could tell it was in pretty rough shape just by looking at it. I replace the barrel due to a bulge and used acra-glas to fix the crack in the stock. Still far from pretty but it works.
Today at the range was the first time I fired it. I went through half a box of Federal 20 gauge “Top Shot” target ammo. After each shot the bolt would go rearward on its own without me cycling the pump. Looking up the issue online, some folks said it was some sort of speed pump feature, others said it wasn’t safe. Can anyone clarify this for me or come across this?