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Toasted Barrel at 750 Rounds

That aint all.....what absolutely amazes me about this entire thread is the fact that it has gone on for three pages of replies, many of which are from some of the greatest rifle/accuracy minds on the planet and not a single one has caught the fact that we have yet to see a photo of the most likely suspect problem spot in the whole barrel!!!!! The throat!!!!!!Especially after 750 rounds.
Amazing that it took the dumbest "freeloading" hillbilly on this forum to point this one out!!!!!!
Lets have a look at that throat and then someone {well, I don't know now...} maybe me?? can tell you if you need to clean it, set it back and try a rechamber or go with a new pipe.

Edit: second only to the throat would be the muzzle crown...lets have a borescope shot of that one too.....the last rifling to touch the bullet is pretty important.
Not much need to see the throat if any other part looks like it does. Now if it was clean and quit shooting we could look at the throat then.
 
I had posted a similar thread with a 500 round count down the tube when accuracy left. I took the advice of Dusty at the time which was to clean after every 5 shots and sure enough accuracy returned. I shot the barrel till about 1200 rounds when I would get a flier in my groups. I also learned that the worn brush with a patch on it and some JB and Kroil greatly accelerated the cleaning process. Just passing it on. Bruce
 
Is it worth it to clean it, or to sell it? You had an offer. You will definitely like the Criterion barrel. By the way CLR would get that carbon out fast. Flame suit on.
 
Makes no sense. You want him to toss a a dirty barrel yet you write of messing with barrels that are/were in the same shape.

Yes. I got rid of both, and don't miss them.The point is there is no right or wrong here, and it's not up to YOU what makes "sense" to Mr. Blum. Sometimes throwing in more required time and effort into something we aren't happy with isn't worth it, especially in this case if he's unhappy it's going to be the new norm for this barrel, when it isn't for his other barrels. Mr Blum has clearly pursued this issue further and is still perplexed & evidently not happy about it. He will be the one to make the final decision if he'd be happier with another barrel, NOT YOU or ME.
 
Flitz or JB and a patch on a worn brush. It will take ten minutes or less to clean the barrel. What’s wrong with cleaning after 20 shots if that is what it takes to keep the barrel shooting accurately?
 
A patch alone wont get that clean in the next year. You're going to need abrasives and a bronze brush

Frank, most of us go through the process of going back to square one peg one on the examination of our cleaning process. Carbon build up is terrific in all of these pictures.

Brushes and abrasives, brushes and abrasives....brush is good for 100 strokes max, if you don't believe it, measure a new brush, then again after every 20 strokes.

On barrels like this, I put a cork in the end of the barrel and soak for two week intervals with a penetrating oil called Free All...best there is. Let the barrel stand up and sit for two weeks, pull the cork, then give 20 strokes with a good bronze bristle brush, dry patch out, re examine. Repeat the process. Usually three soakings will get it out, and a follow up with Montana Extreme Copper cream gets the tiny little molecules out that look like minute pepper that is left.

Good luck
 
There is no magic liquid on a patch or a brush that's going to remove the problem you have. The only fix is JB or Iosso on a patch wrapped around a worn out 6mm brush and a lot of scrubbing. That's your only way out of your delima. LDS
I agree. There is a point when patches and brushes aren't enough. This is a case where Iosso or JB on a patch/brush or pellet is needed.
 
Not much need to see the throat if any other part looks like it does. Now if it was clean and quit shooting we could look at the throat then.

No sir, you are dead wrong on this one sir. Rare, admittedly, but wrong nonetheless. I have seen many barrels with what appeared to be a perfect bore and the throat was severely cooked. Likewise, and I know you have too, seen many barrels that showed worse fouling and dirt that shot just fine. Anytime accuracy drops off the throat is always suspect.
Don't take missing this too hard Dusty, you weren't the only one. It may not be the throat, but it {and the crown} is the first thing that should be looked at.
 
Frank, most of us go through the process of going back to square one peg one on the examination of our cleaning process. Carbon build up is terrific in all of these pictures.

Brushes and abrasives, brushes and abrasives....brush is good for 100 strokes max, if you don't believe it, measure a new brush, then again after every 20 strokes.

On barrels like this, I put a cork in the end of the barrel and soak for two week intervals with a penetrating oil called Free All...best there is. Let the barrel stand up and sit for two weeks, pull the cork, then give 20 strokes with a good bronze bristle brush, dry patch out, re examine. Repeat the process. Usually three soakings will get it out, and a follow up with Montana Extreme Copper cream gets the tiny little molecules out that look like minute pepper that is left.

Good luck
And here I thought I was the only one on this site that used Free All.
 
No sir, you are dead wrong on this one sir. Rare, admittedly, but wrong nonetheless. I have seen many barrels with what appeared to be a perfect bore and the throat was severely cooked. Likewise, and I know you have too, seen many barrels that showed worse fouling and dirt that shot just fine. Anytime accuracy drops off the throat is always suspect.
Don't take missing this too hard Dusty, you weren't the only one. It may not be the throat, but it {and the crown} is the first thing that should be looked at.
If theres that much carbon in the barrel you know theres a carbon ring there- or at least id bet on it. I wouldnt have to look. It could be pristine but it matters none with that much carbon in the barrel
 
What level of accuracy do you want to achieve? All this impacts barrel longevity...or how many barrels will fit into your budget? Some/most barrels will never shoot great. What to do? $$$$$$$$$$$$
Ben
 
I like soaking with a Super penetrating oil like Free All, prior to going to work with abrasives, time allowing.

At the end of a red hot day shooting p. dogs is another issue all together!

This new product, Flitz Bore Cleaner that is Green, has proven to be very very good on carbon and carbon in necks. I don't know how abrasive this product is and use it on horribly carboned up barrels.
 
If theres that much carbon in the barrel you know theres a carbon ring there- or at least id bet on it. I wouldnt have to look. It could be pristine but it matters none with that much carbon in the barrel

Okay, so don't bother looking at the throat with any barrel that has an accuracy problem. There, fixed it...does that make you fell better. Automatically conclude it's nothing more than carbon and it just needs cleaned. I get that it's embarrassing to miss the call, but to keep hammering on it like you are right.....well, all I can say is, of all the people, Dusty. Why not have a look and if it's cooked you don't need to bother with the ring?? Never mind, you don't have to answer.
 
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Okay, so don't bother looking at the throat with any barrel that has an accuracy problem. There, fixed it...does that make you fell better. Automatically conclude it's nothing more than carbon and it just needs cleaned. I get that it's embarrassing to miss the call, but to keep hammering on it like you are right.....well, all I can say is, of all the people, Dusty. Why not have a look and if it's cooked you don't need to bother with the ring?? Never mind, you don't have to answer.
I really dont think you understand what im trying to say. But ok if we spin it your way yes im wrong. I have bever looked at a throat.
 
That aint all.....what absolutely amazes me about this entire thread is the fact that it has gone on for three pages of replies, many of which are from some of the greatest rifle/accuracy minds on the planet and not a single one has caught the fact that we have yet to see a photo of the most likely suspect problem spot in the whole barrel!!!!! The throat!!!!!!Especially after 750 rounds.
Amazing that it took the dumbest "freeloading" hillbilly on this forum to point this one out!!!!!!
Lets have a look at that throat and then someone {well, I don't know now...} maybe me?? can tell you if you need to clean it, set it back and try a rechamber or go with a new pipe.

Edit: second only to the throat would be the muzzle crown...lets have a borescope shot of that one too.....the last rifling to touch the bullet is pretty important.
Before I start I want to say I don't have a flame suit on. I got the point last night. I just ran a tight patch with JB for approximately 100 strokes. Here are a few pics of the throat and crown area. The lands have moved in .014" since new. That barrel also has a Harrell's brake on. The small one with many holes. 2020-04-24 19.19.54.jpg 2020-04-24 19.24.12.jpg 2020-04-24 19.24.47.jpg 2020-04-24 19.28.07.jpg
 

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