According to this article it will be 1 in12
https://www.outdoorlife.com/guns/360-buckhammer/Remington was also still finalizing the chamber drawings and specs for the round, specifically in terms of twist rate and throat dimensions. My rifle came with a 1:14 twist and had a steep 12-degree leade machined in the throat. The final specs for the .360 Buckhammer call for a 1:12 twist and a 1.5-degree leade in the throat, both of which should improve the round’s accuracy.
I shot five 5-shot groups with my rifle at the range and the groups averaged 2.442 inches. That’s okay for shooting within 150 yards on deer, but there’s certainly room for improvement. Based on my experience with similar cartridges in lever guns, I would expect to see the average of multiple 5-shot groups in the 1.5- to 1.75-inch range. With that accuracy, I’d be comfortable to 200 yards on a whitetail.
