Recommend you take it to a gunsmith. Improper assembly may cause damage or injury.
Depends entirely on the exact configuration you have.
yes it did. i own a heavy barrel 225 Winchester model 70 ,
In this model of Winchester rifle,there is no difference in value between the round or octagon barrel.
Heavy Barrel
275-500 dollars,depending on the overall condition and a good bore.
Ask a gunsmith for help
See the link below for the parts manual.
580mm, or 22.83 inches. Rather long barrel for a .22 rifle.
rifle barrels may have a different external diameter. A rifle that is carried for hunting will usually have a "sporter" barrel- slender, to save weight. Target rifles will have more massive, stiffer barrels for accuracy. Those are "heavy" barreled rifles.
Beeman usually has the Model number on the side of the barrel by the loading port or on the barrel by the hinge on break barrel rifles.
You need to find a good gunsmith
Who made it? Is it a shotgun, rifle or handgun?