I was at the gun shop near my house today and I saw they have a Winchester Model 70. It is a wood-stocked model, one of the old style ones with the thin white piece between the stock and the darker-coloured cap. It is chambered in .25-06 and has scope rings on it (the scope rings don't have any brand markings. The bore looks clean, as does the bolt. I tried searching on gun broker and only saw one rifle, a classic one, that was chambered in .25-06.

Now my questions:

1) Could I replace the barrel on this rifle with a .30-06 barrel? I saw some of those for sale fairly inexpensive.

2) Would a pre-1964 barrel fit on any Model 70? I saw some barrels that were marked pre-64 and am curious whether I could use those.

3) Do you think this rifle is a pre-64 version? I do not know how to tell the bolts apart since I haven't compared them. I think I saw that the serial number was 5XX,XXX but I am not entirely sure, and I saw on Wikipedia that the ones below 700,000 are pre-64.

4) Is this gun worth $450?

I appreciate your help.