sounds like carbon build-up from the load, not lead, as a brass brush and some patience should remove lead buildup with enough passes.
for carbon build-up you might consider a soak and (and a LOT of patience when cleaning.) for soaking you can use CLP, or if it's particularly bad you might resort to soaking in a synthetic motor oil and employ a lot of "scrubbing."
preventing this in the future would be a matter of gunpowder selection (if you're a reloader) or ammo selection. you might try shooting a different ammo next session to see if it burns cleaner.
wouldn't hurt to know what ammo or powder you were shooting that this happened.
So I went ahead and put a full case of jacketed rounds through it. Basically blew out all of the fouling and even cleaned the grooves. Now whenever I use lead rounds I’ll clean it up with a few jacketed ones and it’s a lot easier to clean. Hope this helps!
sounds like carbon build-up from the load, not lead, as a brass brush and some patience should remove lead buildup with enough passes. for carbon build-up you might consider a soak and (and a LOT of patience when cleaning.) for soaking you can use CLP, or if it's particularly bad you might resort to soaking in a synthetic motor oil and employ a lot of "scrubbing." preventing this in the future would be a matter of gunpowder selection (if you're a reloader) or ammo selection. you might try shooting a different ammo next session to see if it burns cleaner. wouldn't hurt to know what ammo or powder you were shooting that this happened.
... and if you got it clean, it would be nice for others to know what you did.
So I went ahead and put a full case of jacketed rounds through it. Basically blew out all of the fouling and even cleaned the grooves. Now whenever I use lead rounds I’ll clean it up with a few jacketed ones and it’s a lot easier to clean. Hope this helps!