Details
I did want to emphasize the point that any play in the barrel adjustment can create barrel peening of the mating faces that gets worse with each shot and is a greater problem with increasing amounts of gap.
Peened surfaces and thread contacts make the repair/refit less effective and/or may require the removal of excess metal to allow a closer match to the contact faces.
Don't make more problems for your treasured Winchester by allowing any play to be present between the barrel and frame on any takedown gun.
There is a similar potential peening issue with other swap-barrel guns like the Remington 870 and even more so with the 1100 and 11/87 cousins.
I have to refit and rework plenty of problem guns already, so don't make more unnecessary work for me, OK?
I'm perfectly happy fixing problems that occur by accident or wear, and less enthusiastic about fixing the unfortunate amateur repair.
Kirby