I have a brand new never fired barrel chambered in 7saum. It was built by SAC. It is throated for the 195 berger eol in a long action mag in a 1-8 twist. Its has the deep spiral fluting and is threaded 5/8x24. This barrel costs over 1500$ from sac and id be willing to sell it for 1300$ shipped. Am also looking for a carbon fiber wrapped barrel from any manufacturer in a 1-8 twist for partial trade.
Im not positive on overall length. Yes i believe they use bartlien barrels. I am elk hunting right now. Will be home the 20th and let you know. I think it is a 26" though.