Odds are 1 in 8
400-800 USD depending on specifics
It will be marked on the barrel.
The Sako L461 Vixen in .223 caliber typically has a rate of twist of 1:12 inches. This means that the rifling makes one complete turn every 12 inches of barrel length. This twist rate is suitable for stabilizing lighter bullets commonly used in .223 cartridges.
1 turn in 9.6 inches
No way to answer without a serial number.
100-450 or so
100-1500 depending on specifics
100-1000 depending on specifics
1/12 or 1/14.
100-1000 USD
100-1000 depending on specifics
300-450