Best left to a trained gunsmith.
Best left to a gunsmith
Proofhouse.com has sn tables for Winchester.
Search on youtube for Winchester 1300 assembly, they are internally the same.
Best left to a gunsmith.
Yes, but ejector spring may need modification- slight change in slot for spring.
Brownells gunsmithing should have a wrench that fits your Winchester model 12 end nut. this site is available on the web.
You need to take it to a competent gunmsith
No, at least not on the original production guns (1892 - 1941).
Winchester Model 1200
Remove the 2 screws from the end or the mag tube and the cap and spring will come out. Do so carefully as the spring is compressed
You need a good gunsmith.
A Winchester Model 70 is a rifle.