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Posted: 6/3/2012 9:57:10 AM EDT
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Finally took my Chiappa .22 upper out and put 250 rounds through it as fast as I could pull the trigger. Surprisingly it worked 100%, but I ended up with some serious leading about halfway down the barrel that isn't coming out with CLP and a brush/patches. What's my best bet to get it out?
Thanks |
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There are several products on the market for removing lead. Some of them are STRONG!. I had a leading problem in four of my .22's due to a certain brand of ammo. I did finally get the lead out, but next time I will do that outdoors to keep the extreme odors out of my house. Also there is a brush that I used, forget the name of it, will try to look it up later. It helped also.
But, CLP was not the best approach for that problem, a chemical especially made to remove lead was. |
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Quoted:
Finally took my Chiappa .22 upper out and put 250 rounds through it as fast as I could pull the trigger. Surprisingly it worked 100%, but I ended up with some serious leading about halfway down the barrel that isn't coming out with CLP and a brush/patches. What's my best bet to get it out? Thanks PC, never "scrub" or use abrasive methods to remove the lead from your bore, you'll do more damage than good. Always use a bore guide, a coated rod like a Dewey one piece, and a chemical for dissolving lead. Send the rod from the breech to the muzzle. This does the least harm to your bore and will not wear it out. I use No Lead, but you need to follow the directions to get the best results. Here's a link: http://www.midwayusa.com/product/588466/sharp-shoot-r-wipe-out-no-lead-bore-cleaning-solvent-8-oz-liquid After the chemical has done its thing, you'll need to shoot about 20 rounds to "foul" the bore again which will bring your accuracy back. Ted |
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If you are getting lead after 250 rounds......it's rough.....OR, you might have a rolled up burr somewhere down the barrel from the rifling process....I've seen that before.
If there isn't a burr rolled up (sometimes you can see it with the naked eye, other times.....you need a bore scope)......then it's rough, you may have a problem child barrel and all bets are off, conventional cleaning won't take care of your issues, you ain't gonna make it any worse with the following process: So first get the lead out......at this point it just don't matter what you use. Take a brass brush and yes, put it on drill and scrub the heck out of it.....using a cutting oil is good to do, WD40 will work just fine. Then.....get yourself some 000 and 0000 steel wool and work that up and down the bore. You could try JB bore paste with the steel wool and then on a patch. Follow up with clean patches. It's gonna take A LOT of stroking to get your bore shiney....but then it won't lead up after 250 rounds. On the other hand.....you could send it back to CHIAPPA and get a new barrel. Tim |
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...and if there isn't a burr, or excessive roughness, then what has he done with your method, Tim?
You say he won't make it any worse, I disagree, he'll make it a lot worse especially if he doesn't know how to lap a bore, or when to stop. First, I don't know all there is to know about barrel fouling, but I have quite a bit of background. You've gone down on record here as being the expert, and I can and do respect that. True enough that mass produced barrels are likely to have roughness which is the number one cause of fouling, both jacket and lead, in centerfire and rimfire barrels. However, the method of chucking a brush loaded with abrasive material in a drill will destroy the "crispness" of the land's edges. Too smooth or "shiny" a bore will also contribute to fouling, especially in a cro-moly barrel. Furthermore, the direction of the finish marks needs to lay parallel to the long axis of the bore, not spiraled as would be caused by a drill turning the brush. Will hand lapping a mass produced barrel make it foul less? Maybe. But it really should be done by someone with experience, who knows when to quit, or as you suggest, just replace the barrel. As for the quality Chiappa puts in to their barrels, it may just be that the barrel is beyond any meaningful repair so your idea represents a "what do you have to lose" point of view. Well if the barrel isn't of poor quality, and he doesn't "gently" remove the lead and then observe for leading afterwards, the method you advocate will not be a help. If after my suggestion the barrel keeps on fouling, then he needs to try something else, the difference between the two methods; one will do no harm regardless of the cause, the other will, if done wrong, end the barrel's life. Ted |
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It's ok, you can disagree.
We aren't there, so we are being arm chair quarterbacks at best......but if new barrel leads up.....not fouls.....there is a problem with the barrel.. We are not talking CF barrels and jacketed bullets. We are talking RF barrels......way different. Rotory brush first....then stroke, no spirals and as for "crisp"........that breaks down after the first couple 100 rounds anyways. Yes, lapping a barrel will 'prematurely' wear out a barrel.....how ever in a RF barrel chances are, you will not ever wear one out. There were a batch of Browning Buckmarks that had this issue once too.....and it was a rough barrel.....lapping the barrel cleaned them up with no issues. You will not wear out a barrel with the brass brush, steel wool or JB paste.....unless you work on it maybe for a week straight. We are talking about an hour or two of work here. Actually......there is one other thing you might want to look at on your CHIAPPA barrel......as they are mag phosphated, it is possible that there are specs of the mag phosphate in the barrel......then, it needs to go back. A company I worked for got a batch of barrels back from a coater and they did not plug the bores properly.....you can't get it out, and you get a leaded bore right now. Tim |
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Unfortunately I have no way of checking the barrel other than looking through it at a light source. I'm not sure if the barrel is even chrome lined, I'll have to look up the specs on their website.
I could see the buildup almost halfway down the barrel and running patches/a bush down the barrel wasn't removing it, so I put a patch over the brush and forced it through (the bore feels like it constricts a little where the buildup is so it took a bit of force) I thought at first that the chrome might have been flaking off, because I got a couple pieces of silver metal out of the barrel, but it I could dent it with my fingernail so I'm pretty confident it's the lead buildup. Do you think that the barrel could be trashed, or could putting 250 rounds of .22lr through the barrel as fast as I could heat it up enough to cause the lead buildup? |
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Well Tim, you've taught an old dog a new trick - so to speak. Based on the mag-phosphate process used by Chiappa and the OP noticing
flakes I am now inclined to agree that there is a very real QA issue with that barrel. While my approach would do no harm, it also would do no good. Thanks for the lesson. Ted |
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