Your Winchester model 1911SL(self Loading)shotgun was first made in the year 1911.
"Your" Winchester Model 21 Double Barrel Shotgun was manufactured in 1933, giving it an age of 77 years, as of 2010.
The model will be stamped on the barrel right after the Winchester name.
Please include the model number of your Winchester shotgun to get a correct answer to your question along with the serial number.
You will need to include the shotgun model number,or model name.Type of shotgun(single shot,pump action,double barrel,or semi-auto)along with the serial number that you have provided to get the correct age of your Winchester shotgun.
At this time no,there are not any available.You could have a model 1300 slug barrel redone and have the gas ports added to this barrel.Then it will work fine in your model 1400 Winchester shotgun.
Look on bottom of receiver and barrel
The Sears model 200 is a Winchester Model 1200.
A Winchester model 1200 field grade shotgun will be between 90-150 dollars for a plain barrel model,100-165 for a vent rib barrel model,and between 140-200 dollars for a shotgun with the Win choke present.
Check the receiver and barrels.
Your winchester model 12 shotgun was made by winchester in 1947.
your Winchester model 1897 shotgun was made in 1916.