I have really butchered this thread. Browning rep called me to clarify the thread pitch on this rifle. He told me misspoke the other day when he said it was 5/8x 24. He stated he was looking at 308 data and didn’t realize it when he gave me information. 223 has the 1/2-28 thread pitch. I then asked him to email me data to absolutely be clear on information. Here is email:: sorry for all confusion.
1/2 - 28 for thread pitch
1-8" barrel twist rate
Hope this helps
rs
Ryan Skidmore
Customer Service
ryan.skidmore
browning.com
Office: 801.876.2711 x3161