Without knowing what is jammed, and not being able to see or examine your rifle, our only answer is to take the gun to a gunsmith.
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I have a Marlin 30 30 deer rifle and it is jammed with the lever action down how can I unjam it?
Millions made.
150
Blue Book of Gun Values
100-1000 USD or more depending on specifics.
A marlin lever action 30-30 rifle can hold fife shells in the magazine and one in the chamber.
Browning has made centerfire lever action rifles in various calibers over the decades.
Mossberg, mid '70s.
Talk to a gunsmith. There is more than one way.
It will fire the 30-30 win.marked ammo.This will be visable on the box of cartridges that you will buy.