cleaning the throat in your barrel??
I have a couple ppc barrels with not a lot of rounds of them, that have seem to lost a little something. I let a good friend screw them on to his action just to get his opinion on these barrels, and he has notice a lot of carbon in the throat area. We both seem to think that once we get this taken care of "cleaned" the barrels just may start to shoot again.
I would have not thought that i would had had an issue with my barrels not getting clean. I guess i need some thoughts on how to keep the throat area a little cleaner. Do any of you fellas use any special technique to clean the throat area on a barrel? Lee
I would try the gentlest option first. Get some Carb (messy) and patch the barrel wet, wet a bronze brush, and brush it well. let it sit for a half hour and repeat. After the second soak, patch it out clean, and look around to make sure that you have not got any on the floor or bottom of your shoes, that could get tracked onto the carpet. Then, check the bore. If this has not done it, fill a nylon brush completely full with Iosso and short stroke the first 8-10" of the bore, in front of the chamber. and then thoroughly patch it out. I find a light oil floats out abrasives better, followed by solvent. Let us know what happens. Some powders need more, and heavier cleaning than 133. 8208 comes to mind.
Great post Boyd. I might add that he also needs to clean out that pesky carbon ring to acheive the full potential of those barrels.
Thats just it. I didn't even realize there was an issue. i clean regularly and i always though i cleaned thoroughly? Live and learn!! Lee
Never forget, Tony Boyer useta' make toothed reaming tools out of 22LR cases to reach up in thar and ream out the carbon ring....
Correction: In my haste I mistakenly left out the "Out " in Carb-Out (Made by the same fellow that sells Wipe Out etc.)
Read Tony's book. He has a section with instructions and puts great emphases on removing this carbon ring. Says it causes "stupid" shots.
For years, Tony shot T powder, which is a whole other thing as far as cleaning, compared to the more typical 133 (for 6PPC). I don't use anything but BBS, bronze brushes, and patches, and no borescope inspection has ever shown any carbon after cleaning. I shoot 133. Different powders take different cleaning.
lee you never said how many rounds through the barrel.
if you get the carbon cleaned out and can get a bore scope inspection,there may be some fire cracking in the throat that is holding the carbon.
my one barrel at about 1,000 rounds and it just showed up all at once..after about 15 rounds i stuck the bore guide in wet a patch and could not get it started in to the barrel.
had to really work at geting a patch in it, well i got it cleaned, a good scrubing and it was shooting well and aprox 16 rounds could not get a patch started in the bore,I guess i kind of new what was going on and have never had this problem before ever. so i cleaned it again good scrubing with JB and butches,kroil oil combo mixture.got it clean and had a guy bore scope it and it was all fire cracked in there and thats what was holding the carbon and causeing a build up. wasent long before it quit shooting alltogether.
After reading Tony's book tried his method which is IOSSO on a 6.5MM nylon brush with a short rod, works quite well.
No carbon buildup
Originally Posted by Boyd Allen
My cleaning method is similar, and I too haven't noticed any appreciable buildup of a "carbon ring". I use IOSSO on a nylon brush after each grand aggregate or every 100 rounds or so...and I use old dirty military pulldown 8208. A cursory glance with a bore scope on my chambers shows a discoloration at the front of the neck portion of the chamber and spotty carbon patches around the circumference.
Some time ago, I took three old barrels and sectioned the chambers so I could get a close up look at this area. I couldn't feel any sort of buildup when rubbing a needle sharp pencil over this area at the end of the chamber neck. Incidentally, I use a chamber that is 1.510" long.
I received the following tip from Scoty Crawford some time ago and it has worked great for me:
Cut the neck off of a case of the appropriate caliber.
Attached a Bronze brush of the next larger caliber to a short cleaning rod and insert brush through the neck until 15-20 bristles come out the other side, draw back to make the bristles stand up..
Use your favorite cleaning solution and insert the brush into the chamber until you can feel the mouth of the cut off neck reach the end of the chamber and rotate a few times.
This shoud remove the carbon ring.
Thanks for the info. How many shots does it take for the barrel to settle down after brushing with IOSSO?
Wish I could understand how you guys find brushes that allow short-stroking. I've not yet found a brush that would reverse in the bore.
Have you tried it with nylon? I have been able to do it with them. I should add that since I use a powder that does not require abrasives (133) I use brushes in the "normal" manner and use bronze, because I think that they do a better job of cleaning.