Too much
400 USD or so
Ruger's web site has extensive sn data.
100-600 usd
Check at the website catalog of Brownells.
Depending on condition, anywhere from $450-$750.
100-450 or so
In the condition you have described your Ruger No.1 will range in price from 675-900 dollars.
300 win.
No, the 300 ultra mag cartidge is not interchangeable with the 300 win mag.
200-1000 US dollars.
100-500 USD depending on specifics