Bartlein Carbon #14 M24/M40 6.5 SAUM 1:7.5twist 22” long. I had it throated slightly longer (don’t remember the freebore) but it shoots the Berger 140’s really well with the boat tail of the bullet right at the neck/shoulder junction. It has exactly 707 rounds down the tube and is still shooting great. I ran it on my Bighorn/Zermatt Ti3 long action with Hawkins Hunter DBM and Mag with spacer. But it will headspace properly on the TL3, Ti3, and SR3 long actions, and Origin Short action, Origin Medium action, and Origin Long action. With mild load H1000 I was running 2950 fps. It also shot great at 3050fps, but I chose the lower node. Price $400