frontstuffer01
I am still lost in the old world... At least once a year i take the barrel to a bucket of hot soapy water with a bore mop and rinse the whole works with boiling water - you will not believe what the heat of the boiling water does to plastic fouling and other bore contaminates.
After the boiling water treatment you can see the flakes hanging in the bore and floating in the water. Then is it just a matter of brushing them out.
And one other standby... JB's bore paste will remove the fouling also.
With the new formulation of polymere in the sabots plastic fouling is quickly becoming a thing of the past.
Hope you get your problem solved....