@Scotch_egg It’s a 24”. That’s the only length Proof offers in the small tenon prefits for most calibers. I actually prefer the 24” compared to my old OTM Gradous barrel that was 26”. The 2” makes the 24” a lot more maneuverable, especially with the Ultra 9 hanging off the end. I’ve been extremely happy with the Proof barrel, it has shot great with every load I’ve tried in it (even without any load dev), seems to be on the fast side, and it balances the rifle almost the same as my 16” .308 barrel. It also looks sweet with the tungsten cerakote, which is at least worth something.
I have noticed that it deflects quite a lot. You can easily push it around inside the handguard, but it is extremely consistent in how it vibrates when shot. I expect it would likely be heavily effected if any force were applied to the barrel externally when you shot, but I haven’t actually experienced it.