Sjögren Inertia Shotgun - Part 1 - A Swedish Designed, Danish Made Shotgun in 12 Gauge

See part 2 with the new recoil spring: Shooting my new(old) Sjögren shotgun. A rare specimen: only about 5000 of these were made between the years of 1908 and 1909. This shotgun uses an inertia action in which the shotgun locks when fired and the force on the firing pin unlocks the action. This 100 year old concept was revived by Benelli and is widely used on their shotguns today. Unfortunately, this example is showing its age and the bolt return spring and magazine springs ar