Hi all, I have zero experience analyzing barrels so I'm looking for an assist here. This barrel (stock Custom Shop RPR) has 340 rounds through it and has only ever been cleaned with Hoppes (nylon brush and patches). I'm seeing some messiness for the first 25 seconds or so, particularly the copper-looking scratch around the 0:21 mark. Anything concerning here? Thanks!
Bore scope video...what am I seeing here?
- Thread starter Jackanapes
- Start date
Unfortunately I bought one too.
I have no training at what I’m looking at or what should be alarming.
Not a total loss. Great for looking at combustion chamber's and cylinder walls.
Generally my target gives me a real idea how things are going.
I have no training at what I’m looking at or what should be alarming.
Not a total loss. Great for looking at combustion chamber's and cylinder walls.
Generally my target gives me a real idea how things are going.
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Not an expert by any means but the first part with the scratch looks like the chamber. How does it shoot and extract? I looked at my 6mm Rem Mauser chamber and it looks like it was cut with a dull butter knife but it shoots great with the right bullet.
Shoots and extracts just fine. My guess is that it's a gouge that got fouled in with copper over time.
Interesting - Looks like a screwdriver or something was jammed in there - not a tool mark.
Here is mine - neck/shoulder junction. Ugly but it shoots and extracts good.
Here is mine - neck/shoulder junction. Ugly but it shoots and extracts good.
Your looking at a very dirty chamber.
My custom barrel looked like that and I had case extraction issues.
Cases were sticking and twice I needed a rubber hammer to beat the bolt back.
I do reload and was not wiping the sizing lube off the cases before I shot them. After maybe a 200 rounds the sizing lube was causing a build up in the chamber.
A brush and some Hoppies #9 cleaned the chamber up and now I wipe the lube off the cases after reloading.
Problem went away.
That small scratch is not to be worried about.
My custom barrel looked like that and I had case extraction issues.
Cases were sticking and twice I needed a rubber hammer to beat the bolt back.
I do reload and was not wiping the sizing lube off the cases before I shot them. After maybe a 200 rounds the sizing lube was causing a build up in the chamber.
A brush and some Hoppies #9 cleaned the chamber up and now I wipe the lube off the cases after reloading.
Problem went away.
That small scratch is not to be worried about.
Jeff Porter
Gold $$ Contributor
Lots of carbon still in the grooves. Here is a .223 bore I just cleaned. Before and after.
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Emmett Dibble
Gold $$ Contributor
production chamber with a reamer that is about to be cycled out, a ton of baked in carbon... you need to soak with (insert what ever carbon remover you'd like) and scrub with a bronze brush....
Larry Koch
Silver $$ Contributor
It needs a good cleaning. Nylon brush don’t work.
urbanrifleman
Site $$ Sponsor
That's a sliver of brass.
Other than that it looks like it's dirty.
Scotch Brite pad on a fat bore brush. Twisty twisty twisty.
Other than that it looks like it's dirty.
Scotch Brite pad on a fat bore brush. Twisty twisty twisty.
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Shooter13
Gold $$ Contributor
I want to know what you are using to get it that clean!!!
Sounds like a consensus that it's just plain old dirty. I can work with that. Thanks team, I appreciate it.
DShortt
Gold $$ Contributor
Good Lord guys!
You're looking at a little bit of corrosion in the first few seconds. The orange-ish stains. The reamer left marks in the chamber walls through out the middle part of the video. So long as you aren't having extraction problems after firing I'd not worry about it. There is a brass sliver lying on the chamber wall for some reason. That's the gold colored part. And in the last part you have a bit of carbon at the end of the case neck but nothing alarming right now. That's around the 34-35 second mark. The black ring. Followed by views of carbon deposits in the grooves and fouling on the top of the lands.
Change your cleaning process. The one you are currently using isn't sufficient and eventually you'll have issues due to fouling build-up.
I'd also consider oiling your barrel before storing if you aren't already. If you already do then you need to change preservatives or apply more. Corrosion will rear it's ugly head eventually if you keep doing what you're doing now.
You're looking at a little bit of corrosion in the first few seconds. The orange-ish stains. The reamer left marks in the chamber walls through out the middle part of the video. So long as you aren't having extraction problems after firing I'd not worry about it. There is a brass sliver lying on the chamber wall for some reason. That's the gold colored part. And in the last part you have a bit of carbon at the end of the case neck but nothing alarming right now. That's around the 34-35 second mark. The black ring. Followed by views of carbon deposits in the grooves and fouling on the top of the lands.
Change your cleaning process. The one you are currently using isn't sufficient and eventually you'll have issues due to fouling build-up.
I'd also consider oiling your barrel before storing if you aren't already. If you already do then you need to change preservatives or apply more. Corrosion will rear it's ugly head eventually if you keep doing what you're doing now.
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Looks like bore brush bristles to me, and maybe even has been fired with some in the barrel. Bore brushes are fairly cheap; use good quality brushes and discard them after a few uses. Personally, I would clean that bore with IOSSO and an IOSSO nylon brush this time. Keep it cleaner after that with Wipe-Out Patch-Out mostly. Occaisionally you may need to go back to something more severe.
snert
Silver $$ Contributor
DShort has nailed it.
Your chamber is dirty and has corrosion from moisture and/or solvent left in it. The "thing" on the chamber wall is a smashed in bore brush bristle, which was there when the round went off. The case expanded and melted/smushed (scientific term) that puppy to the wall of the chamber. You are developing a carbon ring at the front of the chamber. You have a metric crap ton (Math term) of carbon build up in the barrel (and likely under it, copper) .
You need to clean the chamber as described above. Scrub the heck out of it and then do it more.
You need a good carbon removing solvent and a good brass brush. Use a solid rod and a bore guide and don't yank the brush back into the muzzle to avoid damaging the crown. Soak it, stroke it, soak it, stroke it. Don't let the solvent run back into the action. In my mind you are looking at 200 passes of a brass brush and about two overnights of soaking in between working on it. Let the solvent do some work for you.
I have found success with Wipe-out, Bore Tech Eliminator, Butches Bore Shine, etc. Just don't mix them. Make sure you have hosed out the barrel with alcohol if you go back and forth between cleaners.
Patch it, soak it, stroke it some more.
After you get all that black goo and probably gold colored stuff under it out, you will see your barrel as it really is. And use a preservative oil (I like Hobo Oil or Butches gun oil on a patch ) in the bore when done. Use a mop to lightly oil the chamber, but remember to dry mop and dry patch before you shoot. Store your gun muzzle down at an angle.
Your chamber is dirty and has corrosion from moisture and/or solvent left in it. The "thing" on the chamber wall is a smashed in bore brush bristle, which was there when the round went off. The case expanded and melted/smushed (scientific term) that puppy to the wall of the chamber. You are developing a carbon ring at the front of the chamber. You have a metric crap ton (Math term) of carbon build up in the barrel (and likely under it, copper) .
You need to clean the chamber as described above. Scrub the heck out of it and then do it more.
You need a good carbon removing solvent and a good brass brush. Use a solid rod and a bore guide and don't yank the brush back into the muzzle to avoid damaging the crown. Soak it, stroke it, soak it, stroke it. Don't let the solvent run back into the action. In my mind you are looking at 200 passes of a brass brush and about two overnights of soaking in between working on it. Let the solvent do some work for you.
I have found success with Wipe-out, Bore Tech Eliminator, Butches Bore Shine, etc. Just don't mix them. Make sure you have hosed out the barrel with alcohol if you go back and forth between cleaners.
Patch it, soak it, stroke it some more.
After you get all that black goo and probably gold colored stuff under it out, you will see your barrel as it really is. And use a preservative oil (I like Hobo Oil or Butches gun oil on a patch ) in the bore when done. Use a mop to lightly oil the chamber, but remember to dry mop and dry patch before you shoot. Store your gun muzzle down at an angle.
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