https://youtube.com/watch?v=Zmu_jwI-bO0&feature=share
what do the barrel experts think? Cleaned with 3 dry patches before this video, approx. 300 pellets thru barrel.
Tuning My barrel! Your thoughts?
- Thread starter nomojo65
- Start date
https://youtube.com/watch?v=Zmu_jwI-bO0&feature=share
what do the barrel experts think? Cleaned with 3 dry patches before this video, approx. 300 pellets thru barrel.
How does it shoot? What gun? What speed with what projectile in what caliber.
If I solely went on a borescope image I would have missed out on some of my best shooting barrels.
If I solely went on a borescope image I would have missed out on some of my best shooting barrels.
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That's the only part that truly matters. The problem with a good barrel is would anything you try to make it better actually make it worse. If I'm happy with a guns performance I try not to look at anything but the crosshairs through the scope. I've tinkered with several good guns until they became parts guns.
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There's more to a good barrel than surface finish. The bore's diameter should be consistent all the way through. The diameter of the bore and the choke will work better on some pellets or slugs than others. From your video, I'd say that's a darn good looking barrel.
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Polish it .Watch exreme airguns 2 part on polishing on youtube . Follow instructions perfect.If you have questions message me.Those marks will all be gone and your barrel will be extremely highly polished. Your groups will be half the size the were.And pay allot of attention to the choke when polishing.
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You could polish it but if it shoots very good like you say I wouldn't worry about it . Polishing your bore probably won't shrink your groups to half there size . If it shoots good I'd leave it be
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Keep the comments and suggestions coming guy’s. I appreciate the input.
Accuracy is a little over MOA out to 65yds, which is the furthest I’ve shot it so far.
Accuracy is a little over MOA out to 65yds, which is the furthest I’ve shot it so far.
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I don't have much experience looking at bore scope images/videos like you posted, but first impression is that it seems pretty polished?
I will add that the CZ .22 barrel that came on my Vet Short is an exceptional barrel. Amazing shooter, 100yards plus and it'll put em where it should. I went for a couple years without ever seeing the muzzle, just halfway cleaning it with pull throughs and the soda straw in the moderator/shroud trick. Finally removed the shroud and pulled the barrel and was quite surprised with how rough the crown was/is.
Point I'm trying to make is that there appear to be factors at play with "good" or "bad" barrels that are not visible or readily apparent.
I will add that the CZ .22 barrel that came on my Vet Short is an exceptional barrel. Amazing shooter, 100yards plus and it'll put em where it should. I went for a couple years without ever seeing the muzzle, just halfway cleaning it with pull throughs and the soda straw in the moderator/shroud trick. Finally removed the shroud and pulled the barrel and was quite surprised with how rough the crown was/is.
Point I'm trying to make is that there appear to be factors at play with "good" or "bad" barrels that are not visible or readily apparent.
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To me, it looks well polished and the little bit of crown you showed looked good. It LOOKS like a LOT of lead built up in places, though. That's just my observation based on what I see with that vid quality. I've been using a Hawkeye for 20+ years and have looked at 100s of barrels but sometimes there's not anything you can SEE that matters. I base a lot on the feel and just look at the overall finish and pay special attention to the lead and crown. In a TJ I tested, it had so much lead in it, didn't see how it could possibly shoot well, but it was pretty respectable. I spent more than 4 hours trying to clean that mess out with all kinds of techniques. Visually, I never did get it 100% clean. I guess that would be a valuable use for the viewer. Should have just lapped it from the start and been done. Yours has a nice finish so for me, I'd clean it well and see how it does. I'm betting with a tight patch and cleaning fluid, you'll pull some chunks of lead.
Bob
Bob
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It’s hard to get a really good clear look at the bore Finnish with out a Hawkeye bore scope! Mine is a cheap Chinese bore scope.
That being said there is lead buildup in middle section of barrel, the crown and transfer port are excellent, lead is good with a little machining marks perpendicular to rifling.
I thought someone might bring up the very fine striations going longitudinally in the bore. (If that’s truly what I am seeing?) that’s the Benefit of owning a Hawkeye bore scope!
What I’m going to do is shoot 100 pellets-clean with 3-dry patches, (bores scope) and continue this process until I get to 500 pellets. I will then clean thoughly with solvent and bore scope again.
I really don’t see that polishing alone will improve it any degree other than prolonging time’s between cleaning? Which I suppose you could say will hold the initial accuracy of this barrel longer?
Lapping is probably the only way to improve the small imperfections from machining or the button rifling process?
I definitely will not lap this barrel (or any other Airgun barrel for that matter) because I don’t know what I’m doing and will do more harm then good! This is something better left to the professional’s.
Thanks for the input and keep the comments coming.
Lastly let me say I’m not at all disappointed in the way this barrel shoots! It actually shoots more accurately than some I’ve owned with “better looking” internal finish’s…
That being said there is lead buildup in middle section of barrel, the crown and transfer port are excellent, lead is good with a little machining marks perpendicular to rifling.
I thought someone might bring up the very fine striations going longitudinally in the bore. (If that’s truly what I am seeing?) that’s the Benefit of owning a Hawkeye bore scope!
What I’m going to do is shoot 100 pellets-clean with 3-dry patches, (bores scope) and continue this process until I get to 500 pellets. I will then clean thoughly with solvent and bore scope again.
I really don’t see that polishing alone will improve it any degree other than prolonging time’s between cleaning? Which I suppose you could say will hold the initial accuracy of this barrel longer?
Lapping is probably the only way to improve the small imperfections from machining or the button rifling process?
I definitely will not lap this barrel (or any other Airgun barrel for that matter) because I don’t know what I’m doing and will do more harm then good! This is something better left to the professional’s.
Thanks for the input and keep the comments coming.
Lastly let me say I’m not at all disappointed in the way this barrel shoots! It actually shoots more accurately than some I’ve owned with “better looking” internal finish’s…
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I don't see anything problematic with the longitudinal striations. They should not be prone to collecting lead. The finish seems pretty good and higher polish would be unlikely to diminish the leading. My LW barrel seems to go south badly with that much lead in it.I like to clean it at the point that it starts leading and just a couple of patches with Gunzilla results in a clean bore. I'd definitely be cleaning by 300 rounds. At least with the bore scope, you can see those last few bits of lead that don't color the patch but will start collecting lead immediately if not removed. For mine at that condition, it would get a good cleaning and a JB Bore polish to make sure the lead was gone then some wax or lube of some sort before the next shot. Interesting that it is still shooting well. I know you're particular so have to believe it's good.
Bob
Bob
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Good information Bob, I will definitely be cleaning before 300rnds with my experience today I shot 200 then cleaned with 3 dry patches as described above, but accuracy fell of way before the 200 pellets were completely gone and when I scoped the barrel it was extremely leaded up.
I went straight to using ballistol to clean with, one wet patch wait 5-6min. then one dry patch? Been at this for about 2hrs now, still getting lead so will let soak overnight and start again tomorrow.
I have never tried Gunzilla, it must remove lead better than ballistol? I do have JB bore paste and bore bright from my CF days, but I really want to avoid that mess in less I have no choice?
I also adjusted the focal length of the lens mirror and got a better visual of the leading.
This is my little diary or note book of my experience with cleaning and effects on accuracy, I’ve never been able to borescope my.177 barrels so this is interesting because of the lower velocity and bearing surface of pellets they just don’t lead up like the higher velocity guns. All my barrels have been LW except the fx guns I’ve owned. I will admit the fx liners seemed not to lead as quickly?
I went straight to using ballistol to clean with, one wet patch wait 5-6min. then one dry patch? Been at this for about 2hrs now, still getting lead so will let soak overnight and start again tomorrow.
I have never tried Gunzilla, it must remove lead better than ballistol? I do have JB bore paste and bore bright from my CF days, but I really want to avoid that mess in less I have no choice?
I also adjusted the focal length of the lens mirror and got a better visual of the leading.
This is my little diary or note book of my experience with cleaning and effects on accuracy, I’ve never been able to borescope my.177 barrels so this is interesting because of the lower velocity and bearing surface of pellets they just don’t lead up like the higher velocity guns. All my barrels have been LW except the fx guns I’ve owned. I will admit the fx liners seemed not to lead as quickly?
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So far, for me, Gunzilla pulls the lead better than anything else I've tried... Ballistol, Hoppes, Shooters Choice, and more. Plus, it has low odor and doesn't seem to hurt plastics. I also use it as a pellet lube to extend the cleaning interval. Doesn't degrade the accuracy but more than doubles my shot count to cleaning. I just use the JB Bore to do an initial clean and if the lead won't come out completely with bore cleaner. Does seem to be easier to clean after a good bore paste/ bore bright session.
Velocity does seem to be the factor with air guns. Your FX were likely less velocity because of the choice of pellets. The JSB 16.1s and 22 cal 25.4s seem to beg to be around 1000 fps. On lead flinging pb's, there is usually a wax or grease involved to control the leading leading but can't do that with ag's.
Bob
Velocity does seem to be the factor with air guns. Your FX were likely less velocity because of the choice of pellets. The JSB 16.1s and 22 cal 25.4s seem to beg to be around 1000 fps. On lead flinging pb's, there is usually a wax or grease involved to control the leading leading but can't do that with ag's.
Bob
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Cleaned with a undersized brass brush and patch’s over the brush with Gunzilla! I was shocked to say the least. Sorry for the bad video quality.
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Looks SO much better. Nice finish from what I can see. Hopefully you can tell the difference in accuracy.
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https://www.amazon.com/Birchwood-Casey-Remover-Polishing-6-Inch/dp/B00AU67BEM/ref=dp_fod_3?pd_rd_i=B00AU67BEM&th=1
This stuff works great! I have been using it on stainless revolvers since the 80's and it take all the carbon off the front of the cylinder. I use it to clean the barrel also, just cut off a small piece from the cloth and put it on a patch jag and send it through a few times. It will get really black/gray from the lead. After a few patches clean like normal and it will be spotless.
Tony P.
This stuff works great! I have been using it on stainless revolvers since the 80's and it take all the carbon off the front of the cylinder. I use it to clean the barrel also, just cut off a small piece from the cloth and put it on a patch jag and send it through a few times. It will get really black/gray from the lead. After a few patches clean like normal and it will be spotless.
Tony P.
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This technique kinda opened my eyes a little, thought I had clean barrels? Will see if accuracy is really any better, assume not, but believe accuracy may not fall off as soon between cleanings? Also Bob I like the Gunzilla better than anything I’ve tried so far.
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