Quote Originally Posted by Shed tuner View Post
And I still 100% agree Neil !

With my very accurate competition TX back in the day, from a cleaned barrel it literally took about two dozen shots to restore full accuracy. This is a gun consistently capable of 1/4" groups at 30 yards. First five shot group on a clean barrel was often was 3/4", the second not much better, only really started looking promising from the 4th group.
If it takes 24 shots to condition a very finely finished Lothar Walther barrel, then perhaps it takes an order of magnitude more to condition a grittier one from a cheaper manufacturer? Or are the imperfections filled and the barrel conditioned in the same number of passes? Am I thinking of sandpaper?

I have a Milbro Diana .177 barrel soaking in oil at the moment, the rifling is actually hard to discern and the bore very 'matt'. Even once that is clean I imagine half a tin of pellets will need to be put through it before any firm conclusions about accuracy can be guessed at.