Have a look at this video. I hope it helps.
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Edit- I moved the link to the video to the bottom of the page. Good video- thanks!
Excellent condition, about $425
100 yrs old
Yes winchester did make a model 250 lever action rifle from 1963-1974.
Take it to a gunsmith.
soft clean cloth
100-1000 usd
Go to the Henry website, and download the owner's manual for your rifle.
No.
Do you not have an owner's manual? Have you tried an internet search on "rifle cleaning procedures"?
Ask a gunsmith for help
Best to ask a gunsmith for assistance.
Ask a gunsmith for help