Best left to a gunsmith.
No
What is the thread size for a Winchester Model 90?
model #24
No
In this model of Winchester rifle,there is no difference in value between the round or octagon barrel.
I need to clean the barrel, not like a model 12.
No, a Model 1400 Winchester barrel will not fit on a Model 1200 Winchester. The two models have different designs and specifications, including variations in the action and barrel attachment system. Always ensure compatibility when considering parts interchangeability between different firearm models.
No.
remove pin from end of magazine tube at barrel muzzle, pull magazine tube from forearm, forearm is now ready to be lifted off barrel
No
The model number should be stamped into the barrel near the Winchester name. It will say "model" or "model of"
Probably Winchester.