Please go to Customer service at Browning.com
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.
A bolt action rifle chambered for 25/06
you will need to call Browning.Browning chose a 1"in 14"twist rate for all rifles chambered in 22-250 caliber.
You will need to call Browning or take it to a gunsmith.
Depends on the caliber.
You could contact Browning at Browning.com and ask.
Try the Browning customer service dept at link below
You have a browning a-bolt rifle chambered in .270 winchester caliber.
The Browning 2007 Product Catalog states that the A-Boltchambered for 25WSSM with a 22" barrel has a 1 in 10" rate of twist.
Rate of twist on this model is 1 in 9 1/2"
It should be stamped on the barrel
Browning,s home page should contain this info.