1 in 12"
twist is 1:9
1 in 10
the rate of twist i probably 9" or 1 in 9" not to sure.
The twist rate in a Winchester 670, 243 caliber is 1:10.
1/12
Impossible to answer without knowing the caliber.
Depends on caliber. www.countrygunsmith.net
Odds are 1 in 8
Browning,s home page should contain this info.
It will vary with caliber.
The "rate of twist on rifling" is caliber specific. To give you an answer we would need to know which cartridge the rifle is chambered for.
Impossible to answer without knowing the caliber