I was shooting with friends last Wednesday, two of whom were using Eley Blues. They were both supplied from the same source. They were complaining about how dirty their barrels were. Compared to mine with Fblues, which were almost still spotless, they really were bad. Large flakes of powder in the breech/ forcing cone areas. They were plastic wads too, I have seen cleaner barrels using fibres. I suggested they change supplier because it looked like it could be a storage issue. I have found Fblues and Fblacks, shoot well through my gun, leaving the barrels almost spotless.