Will a Winchester 1400 12 ga barrel fit a 1300 pump?

Answer 1

Physically, it will fit but should not be fired. The 1400 is a semi-auto that uses the gases from the fired shotgun round to eject the fired round and load the next round. If you look at the barrel ring on the 1400, you will see that there are two small ports where the gases in the barrel leave and enter the gas piston which drives the ejection mechanism. The 1300 is a pump that does not use the gases in the barrel to load or eject rounds. If you shoot the 1400 barrel on the 1300 pump, the ports are not connected to the gas piston and the gases or particles of unburned powder or other residue will escape from under the forearm possibly causing an eye or other serious injury to the shooter or bystanders.