I have recently done some work on my .177 Veterans barrel crown, polish barrel, and worked on the transition from the aluminum transfer port to the lands of the barrel . The barrel was not finished very well in that area just like the crown. When I slugged the barrel I first sized the pellets by pushing them thru the aluminum transfer port and into the barrel stopping several pellets In the breech end and pushed them back out the breech those pellets showed quite a bit of damage from engaging with the sharp lands so I did a little work in that area until test pellets showed improvement, of the work done on this barrel I think this is what made the most improvement. The gun went from extremely pellet picky to a social butterfly.
I have three guns with this same barrel (CZUB) two Veterans a .22 and .177 and an AGT .177 Vixen although not as pellet picky they will all get this treatment.
Crown on the vet .177 before, did not get good images of the breech end.
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