Yes. The gas ports on the 1400 barrel will fill up with dirt/powder residue but it will work fine. I have been using an cut down 1400 barrel on my 1300 for many years.
No
no
no the 1300 barrel does not have gas ports in it yes the 1300 barrel will fit ,no it does not have the gas ports BUT any competent machine shop or gunsmith can drill out the ports for you.
No
Yes the Winchester 140 is a cheaper varient of the model 1400. The only real difference is the type of material used in the storck and foregrip. A 1400 has Walnut or Synthetic stocks avalible. Where as a 140 was only avalible in a hardwood usually birch stock with no checkering and a walnut stain. The word Ranger on the barrel is normal the Model 120 pump and the 140 auto were both in the ranger series. The 140's are getting quite rare and not shown in many articles because Winchester only made 5000 of them in 12,20,16 and 10 gauge. Also the 1400 barrel will interchange with this fine Winchester. zmopar1@aol.com
Not too sure but I do know a Sears Model 300 barrel (their clone of the 1400) will not fit a 1400 action.
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.
No
No
Yes, but ejector spring may need modification- slight change in slot for spring.
No
It should work perfectly. Winchester made the Sears Ted Williams Model 300 and they used their Model 1400 to do it. Other than some minor differences in the wood and markings, they are the same.