Quote Originally Posted by Troubledshooter View Post
The barrel of the Osprey screws into the block and is threadlocked in place.
This is a weak spot, as I had one with a broken barrel just at the point where the thread ends and the barrel begins, and I know of several others that had the same problem.
Is it possible your barrel has a similar problem, with a slight crack at the weak point ? This would possibly explain why the barrel appears out of true.
Thanks for that (and the email!) however I don't see a crack and it does not sound too feasible with that thickness of barrel, I suppose that the barrels are made of mild steel or just slightly better, nothing hardened or tempered so they would take a hell of a lot of bending/bashing fatigue etc before they cracked? Of course if humungously overtightened and potentially sheared... but suppose the stresses in the metal would be noticeable.

I can only imagine that the thread in either the barrel or the cylinder was not cut straight?