I have a Winchester 1400.
They're an OK gun. They're a contemporary of the Remingtion 1100 and the biggest fault of the Win 1400 is it was simply not as good a gun as the Rem 1100 (which is a very, very good gun).
The Winchester 1400 is kinda the predecessor of the Win SX1 (similar gas operating system), they're very soft shooters (felt recoil is pretty light) but they like to be clean. Some people think the Winchester 1400 is a mutt, others think they're perfectly serviceable shotguns and as long as you clean them well every 500-1000 rounds or so they're relatively reliable.
With 1 oz loads my 1400 is a pussycat to shoot ... a great gun for introducing newbies, although it can be a little heavy for some beginners to support (they tend to lean backwards). I've never had my gun hiccup on light loads or heavier field loads, except when dirty.
The gun will have a 2 3/4" chamber so don't be tempted to try 3" or 3.5" magnum ammo in it. The screw in chokes (if the gun has them) extend beyond the muzzle and protect from dings, etc. Parts are available for service and repair. Its a 2+1 gun with the magazine holding 2 rounds and one in the chamber. The magazine cannot be extended. Getting a sling swivel magazine cap for a 1400 is like trying to find a rooster tooth necklace.
All in all they're a relatively cheap gun which is more than suitable for most people's field and occasional target needs. Probably not the best gun for a dedicated competitive trap or skeet shooter putting through thousands of rounds though.
Hope that helps
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