BudsGunShop.com - Thread size on the end of the barrel.

Donnie, for an accurate answer, I would contact Savage at (800) 370-0708 or via their website >>> https://service.savagearms.com/hc/en-us/requests/new

It should be 5/8×24 thread pitch but can't find a definite answer. You can contact Savage at (800) 370-0708 Monday through Friday 8:00AM – 5:00PM. Hope this helps.

Donnie, Thread pitch is 5/8x24... fairly standard for most things bigger than 0.224 diameter bore. Above 0.338 you start seeing something like a 3/4-20 thread. Cheers and stay safe!

even the savage page does not list the thread size so I suggest that you contact Savage to ask PHONE
US or Canada: (800) 370-0708 savagearms.com/content?p=firearms&a=product_summary&s=57555