I have a rough .510 bore Lother Wather barrel that is worthless to me. I'm not experienced or competent in lapping barrels. I would like to pay someone to try to lap my barrel. It is straight but only shoot 3 to 5 shoots before accuracy is completely gone. This is my last effort before buying a custom lapped barrel. I have in my youth incorrectly lapped a barrel . Thank you
Barrel Hand lapping needed!
- Thread starter RM.510bigbore
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Still waiting for my refund from Umarex. I have felt, a custom jag, and polish. Is this an Air force or an Umarex barrel? I'd be happy to give it a try, but if it looks like what I was seeing with mine, there may be no fixing it. No money needed.
I will also mention that when hope is lost, its a good time to learn because your mistakes are better than the current results.
I will also mention that when hope is lost, its a good time to learn because your mistakes are better than the current results.
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Toss it in the trash and get on with life. Even if you work for two days getting it smooth, it will likely end up too big or inconsistent in diameter and suck anyway. Chunk it, don't waste your time and frustration.
Or sell it to the ones that try and tell you it's easy to fix.
Been there and done it, wish I had that time back to do anything else with LOL
Or sell it to the ones that try and tell you it's easy to fix.
Been there and done it, wish I had that time back to do anything else with LOL
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It is a factory Texan 34 inch .510. Shoot a Pm ill ship you the barrel and return shipping. Its just a typical rough factory barrel. I drilled and reamed thousands of like quality barrels when I worked at ER Shaw barrels. It just has the typical machine marks on the rifling.
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Yup, wrecked my first Bulldog barrel trying to make something out of defect. The second barrel was significantly better and polished out the one real defect fairly quickly. But boy was the first barrel shiny now, just too big. Used the first one to test reaming the rifling to a different angle, so not a complete waste.
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If there's actual machine work in the rifling, I would get it replaced by the mfg. If it otherwise looked good, I might try and polish it. I have nothing that size, though, guess I'd just need a jag. Last step would be fire lapping slightly, but you'd need the gun operational and projectiles. Someone could send you a small amount of polishing compound and instruct you on that if you decide to go that route.
All the barrels I have polished already looked good. But polishing does increase clean interval greatly. And polishing, if done right, should only remove the tiniest bit of material. Not even measurable, so not sure what these other guys have been doing....
All the barrels I have polished already looked good. But polishing does increase clean interval greatly. And polishing, if done right, should only remove the tiniest bit of material. Not even measurable, so not sure what these other guys have been doing....
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Here is the question, do you want to try this yourself? You are welcome to my felts, probably won't buy another 45 or 50. The special jag is just an 8-32 brass screw and some brass nuts that I reduced with a file and drill to fit my 357. I think I have more screws and nuts and could make another quickly if you want to try it.
Went through most of a bag of those felts on my first Bulldog barrel, I could get about 30 shots before leading started making the shots wander. That's when I bought my borescope and started looking at things.
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There are kits that you can buy where you can apply multiple levels of grit to your actual bullets. It’s easy to do. I did it for a powder burner, I’ve never done it for an Aragon. I would imagine it would work equally well. It was really quite cool, and there’s no way to mess it up.
let me know if you want me to try to figure out the name of that company. Or just Google fire lapping
mike
let me know if you want me to try to figure out the name of that company. Or just Google fire lapping
mike
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The practice often referred to here as lapping, is really just polishing. And in some cases it will help with minor machining rough edges. Actual lapping is a different, and specialized procedure, and one that most of us will invariably screw up. It involves a lead lap and the use of various grades of compound. I suggest that you try an aggressive polishing, which probably will not work, then replace the barrel.
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I'm going to try the fire lapping system. Two metal plates roll cast slugs with the different lapping compound grits. I will.use my 650 grain slugs with the most bearing surface turn down the pressure and powder wheel to 500 or 600 fps and see how it works. I have the kit coming Monday. I wish I could video borescope video the before and after and accuracy test. Thank you all in this community The kindness and wealth of wisdom is greatly appreciated.
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Just make sure all the lead is removed before fire lapping, the grit doesn't do anything on the leaded surfaces.
Also if you powder coat, a couple of us thought about mixing grit in with powder coat and then coating some special rounds, would help hold the grit in place going down the barrel. Can get different grits at Harbor Freight for pretty cheap.
Also if you powder coat, a couple of us thought about mixing grit in with powder coat and then coating some special rounds, would help hold the grit in place going down the barrel. Can get different grits at Harbor Freight for pretty cheap.
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Agreed, if the gun is a recent purchase, send it back for repair / warranty.
If it's an old purchase, look at a YouTube video or two, and do it yourself. Apparently, can't be any worse than it is now ! Just go slow, and don't expect to remove ALL of the defect(s).. Just clean it half way, then do some shooting, see what the changes are.
Mike
If it's an old purchase, look at a YouTube video or two, and do it yourself. Apparently, can't be any worse than it is now ! Just go slow, and don't expect to remove ALL of the defect(s).. Just clean it half way, then do some shooting, see what the changes are.
Mike
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I have had very good luck using J-B Paste and Kroil with the pellets to clean up the barrels of my guns. Seems to increase the consistency. The only can not find .177 pellets with the hole threw them to attach to the jag.
gvjack
gvjack
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I agree 110%, JB Paste is the way too go, air gun barrels are often made from softer metal, I just cant see fire lapping as a practical method or polishing/smoothing your bore.
Might I also add that I would use a metal polish after you clean all the JB from the bore? I used Rolite metal polish when I ran out of FLITZ and it works as well if not better to actually shine the barrel after using JB to scour the bore. I have seem a 50 FPS increase with simply using them both to knock down and then polish off the burrs etc.
Good luck!
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I'm liking a product called White Diamond metal polish best, it starts cutting quickly, leaves a fine polish, smells good, and leaves a very thin wax protective layer. Follow it with some cleaning, then some car wax.
You can get the White Diamond in auto stores and big box home stores.
You can get the White Diamond in auto stores and big box home stores.
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