The value of a Mossberg New Haven bolt-action 12 gauge shotgun actually depends on a couple things. Most important would be the condition of the shotgun.
Yes, you can.
The Mossberg 500A1 shotgun typically has a magazine capacity of 5 rounds when using 2.75" shells or 4 rounds with 3" shells.
All day long. Any shotgun can handle shorter shells than it is chambered for as long as they are the same gauge.
You need to get to a gunsmith now.
Is it chambered for magnum shells? If not, the answer is NO.
The length of the chamber in a 2 3/4 inch chambered shotgun is 2 3/4". The longer 3" shotgun shells will not fit in the chamber, being 1/4" too long. You can shoot 2 3/4" shotgun shells, of the correct gauge, in a 3" chambered shotgun.
12-70 is frequently used to indicate the gauge of the shotgun followed by the length of the chamber in millimeters. In the US, or non-metric measurements, that means a 12 gauge shotgun chambered for 2.75 inch (usually read two and three quarter inch) shells. Sometimes, you'll see 12-76 to designate a 12 gauge shotgun chambered for 3 inch shells.
This is a Browning Auto-5 Shotgun, 16 guage made in 1950. It is chambered for 2 3/4" 16 ga shells
The Mossberg 9200 can accept 2-3/4 or 3 inch .12 gauge low brass shotgun shells.
yes 2 3/4 shell will work in a shotgun chambered for 3in as long as they are of the same gauge
You can fire 2 and 3/4 inch shells in a shotgun chambered for 3 inch shells. There is no 3 and 3/4 inch shell made.
Yes but not the other way around .You can not use 3" shells in a 2 3/4 chambered gun.