I have a sako L461 serial no 97578. This was purchased in 1968 , so, I guess no 86302 would be somewhat older.
Someone at the Sako collector club might know.
No known published sn data in the US
No English book published with this information.
You will have to contact Sako. Falls outside published data.
62 or so
Need a DETAILED DESCRIPTION OF ALL MARKINGS to answer.
Depending on condition 400-1000
No sn data published in english, 100-1000 depending on specifics
It's a high-quality, bolt action rifle, which apparently comes in .223 rem, .222, and a few other high-velocity, small-bore calibers. Sako is a Finnish firearms manufacturer. You can find more information buy searching for Sako L461 on Gunbroker, or reading the Sako article on Wikipedia. A blue book of gun values can help you find the appropriate price value if you're looking to sell or insure your L461.
Check the auction sites. Check the Blue Book. Do a web search. Rough ballpark would be 400-1000. Depends on how bad you want to sell, how bad someone wants to buy, etc..
The twist rate is 14"
1-8 or 1-12