Two things, if you have a rubber barrel, it will deteriorate with time and might need changing.
Manchester Minerals sell a slightly alkaline soap to minimise this, though I suspect a pinch of bicarbonate or soda crystals with Barrelbrite would do just as well.
I have done a lot of trials with mixed stainless steel shot from various sources and recently found that the one from creative glass, is the finest and best polished to minimise those tiny pinpricks due to the needles. It also gets even better with use:
https://www.creativeglassshop.co.uk/...ase=mixed+shot Dennis.
Bookmarks