Originally Posted by
andrewM
I was about to make exactly the same suggestions. You might like to fire a pellet or two into a bucket of water, which should produce a clean pellet afterwards. Place a thin piece of paper over the bucket, to prevent the splash back, which could wet the barrel.
It is quite difficult to see what is down the cylinder with a torch because of the distance but it should produce a guide. It sounds to me as if a new tap has been introduced at some stage. Quite what to do to re-align tap with barrel is a complex question, to which I do not know the answer!
It is strange that two in three is sticking; you would think there would be consistency with all three.
I understand the taps were bored through as part of the barrel, so were a perfect fit in each instance.
A