This has been done by many LR and BR shooters.
What kind of fouling is this mess?
- Thread starter Hitzy
- Start date
What's 'many' ? I would suspect not the majority. I knew of no BR shooters doing that in the 70's and 80's. What can be gained by rotating dirt and debris at right angles to the rifling. The rotating brush working at right angles to the rifling does not reach down to the inner edge of the rifling, it is concentrated and wears on the upper edge of the rifling. I do not understand how this can be good for a barrel. There are better ways to remove fouling.
There is a video with Lou Murdica explaining how he does it.
He even states the spinning brush catches on the edge of the rifling and you have to stoke back and forth with the rod to clean the bottom of the grooves.
I never found cleaning a benchrest barrel any great problem. It was usually done after every relay... and no benchrest barrel would ever look like the barrel in post 1.
The barrel in post one needs all the help it can get. A drill is where I would be immediately if not sooner.
KyleSchenk
CGN Regular
Why take the chance damaging the rifling though? A DIY electrolysis set-up is cheap, easy and works well without all the physical effort.
It probably won't. But it won't clean worth a damn either if rotated inside the barrel. Needs to be cleaning lengthways following the rifling.
Well I would hope you are still moving the cleaning rod lengthways along the bore.
KyleSchenk
CGN Regular
It's not the base material of the bristles that would be my concern. It's the massive accumulation of cupro nickel, carbon and probably rust in there that would do the damage. There are far too many unknown/ uncontrollable variables. The bore has been galvanized. Cupro nickel, depending on its composition has the ability to be work hardened and heat treated. You go ripping a bore brush at any rpm into an inconsistent diameter bore attempting to dislodge all that build up and what do you think will happen? Now add in carbon deposits and rust to that high speed brush spinning in there perpendicular to the rifling. It's not a good idea at all. In all honesty, I don't think you would get too far. With the bore already being constricted and coupled with an inconsistent diameter, and the brush being run radially vs axially. I'm willing to bet the twisted wire of the bore brush would seperate from the crimp at the mandrel or the threaded shank would shear/strip in short order. You'd end up with the same galvanized bore, now with half a bore brush lodged in it.
Been a while lol. But wanted to say I haven't given up on this mess.
I'm sure it's interesting to some of you.
Laid off the JB paste for a bit, action is still sitting in my bench vice, trying several different things, heavy ammonia soaks, heavy carb out soaks, seems to soften it all up a bit for sure, main mechanical scrub is a stainless tornado brush with general chassis grease, that's been making some progress. I don't like those stainless tornado brushes, but figured with grease it would help prevent any scarring or damage, so far it's doing a good job.
I can see rifling now the last 10" of bore near the muzzle that I couldn't before, it was just plugged with that nickel fouling mess.
So it's getting there, gave up trying to get it clean in a weekend lol, it's too bad for that.
Grease and tornado brush come out black everytime, little more of that and will switch back to the JB.
Still committed to getting it clean, just weekly now, as it's pretty boring of a problem lol
I'm sure it's interesting to some of you.
Laid off the JB paste for a bit, action is still sitting in my bench vice, trying several different things, heavy ammonia soaks, heavy carb out soaks, seems to soften it all up a bit for sure, main mechanical scrub is a stainless tornado brush with general chassis grease, that's been making some progress. I don't like those stainless tornado brushes, but figured with grease it would help prevent any scarring or damage, so far it's doing a good job.
I can see rifling now the last 10" of bore near the muzzle that I couldn't before, it was just plugged with that nickel fouling mess.
So it's getting there, gave up trying to get it clean in a weekend lol, it's too bad for that.
Grease and tornado brush come out black everytime, little more of that and will switch back to the JB.
Still committed to getting it clean, just weekly now, as it's pretty boring of a problem lol
