I have a 24in 22Br barrel cut for a Curtis Axiom. The barrel is .100 Freebore 7T and was done by Straight Jacket Armory. I bought this from one of their team Shooters and was told there is 0 rounds down it. I was told it's a Proof blank, and measures 1.23 at the chamber end and tapers down to 1in at the muzzle. Also included is a 22BR barrel to use for fire forming brass. $600 shipped.