Try proofhouse.com, blue book of gun values.
We MAY be able to find answer for you, if you can find the MAKE of the rifle for us.
30-06 is a common, popular caliber, over 100 years old and still in production. Lots of different models of rifle have been chambered for 30-06 so without knowing the make, model, age and condition of your rifle there's no way to answer your question. Google your rifle by make and model and you should start to get a rough estimate.
That will depend on the make of the rifle and the age of your pump rifle.
Winchester made the model 1873 rifle and the model 1876 rifle,but did not make a model 1875 rifle.
Any reputable gun dealer should be able to source an extension mount for the Baikal single shot rifle. Millet make mounts suitable for the Baikal rifle
Take the rifle to a gun shop so they can figure out what make, model and caliber rifle you have. There is no 84 caliber long rifle.
That depends on the exact make and model of the rifle itself
Tell us the MAKE as well as model, and it will be much easier for us to give you a correct answer.
That depends on the exact make and model of the rifle itself
This all depends on the calibre of said rifle make and model :)
That depends on the exact make and model of the rifle.
some are, some are not. That is a make of rifle, not a model.