How long the does it take for the barrel to lead in and accuracy to improve after polishing with bore cleaner ?
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Polishing barrel
- Thread starter Treepharmer
- Start date
If barrel shot well before the process / it should return to it's former glory within 30 or less shots, or right away.
If barrel was a turd before hand and your barrel work was an attempt to get it shooting better ? ... sadly it still may be a turd and never shoot well.
So .. whats the WHOLE story and maybe we can help ?
If barrel was a turd before hand and your barrel work was an attempt to get it shooting better ? ... sadly it still may be a turd and never shoot well.
So .. whats the WHOLE story and maybe we can help ?
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It didn't shoot very well out of the box. I shot 1000 rounds then decided to use Nervoustriggers method to accurize it helped some but not what I expected. I am getting 3 to 4 inch groups at 50 yd. It is a Hatsan At 44 .25 cal, and I have used many different pellets .
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Very mild polishing using JB Bore pastes may turn a good shooter into an excellent shooter. However, it will never make a crap shine. Buy a raw LW barrel and adapt it to your gun.
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I have tried H&N,JSB,Benjimin Air Arms,Crossman nothing under 25 gr. I think I got a dud. Does anyone know where I can get a "good" replacement.
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Aloha Treepharmer,
Is this a new or used AT44? The reason I ask this is that I bought a used Hatsan bullboss .25 from a member on this forum and when I got it, the gun looked fine but when I shot the gun I could not get it to group at all 4 in @ 40 yds. no matter what pellets I tried. To make a log story short, I removed the barrel and found it to be bent, when I called the member I bought the gun from he said he didn't have that problem and all sales were final. So I ordered a new barrel from Hatsan and the gun shoots just under 1 in @ 50 yds. I believe the barrels are the same for the AT44 & the bullboss 19.5 in.
BTW the member that I bought the gun from is no longer active on this forum, I haven't seen a post from him in 1 1/2 years.
Aloha,
Keone
Is this a new or used AT44? The reason I ask this is that I bought a used Hatsan bullboss .25 from a member on this forum and when I got it, the gun looked fine but when I shot the gun I could not get it to group at all 4 in @ 40 yds. no matter what pellets I tried. To make a log story short, I removed the barrel and found it to be bent, when I called the member I bought the gun from he said he didn't have that problem and all sales were final. So I ordered a new barrel from Hatsan and the gun shoots just under 1 in @ 50 yds. I believe the barrels are the same for the AT44 & the bullboss 19.5 in.
BTW the member that I bought the gun from is no longer active on this forum, I haven't seen a post from him in 1 1/2 years.
Aloha,
Keone
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Try "slugging the bore" to feel how the pellet travels down the bore, and then measure the skirt and head diameter. Was it tight, loose, loose then tight (choke), or were there loose or tight spots along the length? I received a barrel that had a bulge in the middle of it. Not one who ever ran a patch down that barrel could ever miss that hollow spot!
Then, if the pellet is tight in the bore and feels good, try to figure out if the barrel is somehow loose, or the maybe scope internals are loose.
Another thing that may cause group size to open up is your line of sight through the scope. If the parralax is not set right or if you aren't consistent with how you look through the scope then it will show up in the group size.
Then, if the pellet is tight in the bore and feels good, try to figure out if the barrel is somehow loose, or the maybe scope internals are loose.
Another thing that may cause group size to open up is your line of sight through the scope. If the parralax is not set right or if you aren't consistent with how you look through the scope then it will show up in the group size.
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I've had it for about a year and bought it new. I believe you are right about the barrels, How much was the replacement barrel from Hatsan ?
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Try the H&N Barracuda Hunter extremes. They are a slight bit heavier at 28.40 grains. For some reason that pellet always does well in any air rifle I use it on, including break barrels.
also, make sure you indexed the barrel correctly with transfer port alignment when you removed it.
After you ran JB paste thru it, did you follow up with JB bore brite? I did both, then finished off with flitz polish. Nice and slick inside the barrel.
Lastly, try lubing your pellets. There’s all kinds of recommendations for lubes, I use FP10 myself. Don’t go overboard with the lube. I dribble around 8-10 drops in a sand which zip lock bag, pour a tin of pellets in the bag, and knead the pellets so they all get lubed equally. Then drop them back in the tin.
its worth a try, right?
also, make sure you indexed the barrel correctly with transfer port alignment when you removed it.
After you ran JB paste thru it, did you follow up with JB bore brite? I did both, then finished off with flitz polish. Nice and slick inside the barrel.
Lastly, try lubing your pellets. There’s all kinds of recommendations for lubes, I use FP10 myself. Don’t go overboard with the lube. I dribble around 8-10 drops in a sand which zip lock bag, pour a tin of pellets in the bag, and knead the pellets so they all get lubed equally. Then drop them back in the tin.
its worth a try, right?
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Aloha,
If my memory serves me right, I believe it was about $48.00 shipped to Hawaii. This was over 1 1/2 years ago.
Aloha,
Keone
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Is it still under a warranty? If the barrel is sloppy loose it is defective workmanship, and should be covered under warranty.
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I would check the velocity before ordering a new barrel. Also have a real good look at the magazine, I had one that every cavity had a burr in it and would mark the pellets.
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+1 on checking the Mag. Hatsan mags are bad about this.
With such large groups, no amount of polishing will cure it. The barrel is simply defective.
KnifeMaker
With such large groups, no amount of polishing will cure it. The barrel is simply defective.
KnifeMaker
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I agree Knifemaker , I've tried all the fixes that have been suggested, spent countless hours reading fourms ,and tinkering on this barrel. I own other air rifles of higher quality and never had this problem. Looks like its time to buy another barrel, but I did learn a lot playing with this thing. Thanks to everyone.
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Attaboy, way too much good bourbon to be sipped to spend time on a bad barrel. I've still got some old/new barrels from my BR days that are waiting their turn as tomato stakes. Even the best makers turn out some bad ones. The problem with high level bench rest, the "bad" barrels may meet the maker's accuracy standard, but still not be competitive. These were powder cartridge barrels, but the same observation applies.
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Have you tried shooting it without the shroud/ moderator to make sure it is not clipping?
Charlie Frear, Georgia Airguns
Charlie Frear, Georgia Airguns
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