ORIGINAL: alsaqr
cayugad, I am not sure the proper term is crud ring.Every time the barrel was swabbed there was that feeling of something in the chamber area. Did not swab after the last shot. Got home and ran a bronze brush through it several times with Bore Scrubber. Ran some patches and there was this caked black stuff for the first few inchesof the barrel. Used the old Clean Shot several years ago and it seemed much cleaner than this.
Would it helpto try and smooth out the barrel withpatches and Jewler's rouge?
I wonder if you're not getting a chemical reaction to the bore scrubber and the powder. Next time run a simple patch withsome dishwater on it. Do about two patches and I think you will see a nice clean bore.
When I was shooting APP and Black Mag 3 I was taking the rifle out of the stock, take the scope off, break the rifle down, and carry all the parts to the kitchen. I made up some hot dish water and poured two cups of that water through the barrel. The barrel was actually clean after that.
I really do not think your bore needs to be hit with the bore paste. Unless you suspect a lot of plastic, copper, orleadfowling there is little need to use the bore paste. I use J-B Bore Paste about three times a year whether I need it or not. I seldom really see anything when I clean with it. These new plastic sabots really do not leave a lot of fowling.
I shot a lot of Clean Shot. You know, I really liked that powder. It was the 2f grade and it shot really good.
Sabotloader's suggestion of a thinner sabot might be a good idea for you to try. I really like theHarvester Crushed Rib sabots.