Depends on the caliber.
Rate of twist on this model is 1 in 9 1/2"
You will need to call Browning or take it to a gunsmith.
Try the Browning customer service dept at link below
The Browning 2007 Product Catalog states that the A-Boltchambered for 25WSSM with a 22" barrel has a 1 in 10" rate of twist.
The rate of twist for a Browning X-Bolt 24-inch barrel typically varies depending on the specific caliber of the rifle. For example, the .308 Winchester generally has a twist rate of 1:10 inches, while the .30-06 Springfield may also feature a 1:10 twist. Always refer to the manufacturer's specifications for the exact twist rate corresponding to your specific X-Bolt model and caliber.
It should be stamped on the barrel
Please go to Customer service at Browning.com
Impossible to answer without knowing the caliber.
It depends on the barrel length. Please re-ask the question with the length. Serial number would help as well, so you can get the ROT for that same year.
Browning,s home page should contain this info.
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.
It may be different depending on the year and the caliber, but recent catalogs show that the few A-Bolts witha 24" barrel have a rate of twist at 1-10"