Author Topic: Old gun re-built  (Read 548 times)

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Offline Gambo

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Re: Old gun re-built
« Reply #20 on: July 16, 2017, 08:07:41 AM »
That's none too shabby accuracy. 8)

Online rabbit sniper

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Re: Old gun re-built
« Reply #21 on: July 16, 2017, 08:42:52 AM »
Great stuff Mel 😀
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Offline IceBlerk

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Re: Old gun re-built
« Reply #22 on: July 17, 2017, 09:32:39 AM »
the old black dog again.

I know it won't be enough to say it, Baggy, but keep your pecker up, mate.

Offline Baggawind

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Re: Old gun re-built
« Reply #23 on: August 12, 2017, 03:33:24 PM »
Well I seem to have done it again - screwed up a perfectly accurate rifle.  After getting brilliant results, accuracy wise , I took the rifle to my HFT club where it caused a bit of interest from some of the guys. One guy had a go with it after saying how quiet is was. So I stood back to have a listen. He was right, it is quiet. He also said it was " bloody accurate " after hitting a pellet hole twice with two shots at 50 yards. ( wish i could do that ) Anyway, feeling chuffed with myself, I took it home and decided to do a shot string test using Bismags. 80 shots, bang on the limit. Then I made the mistake of cleaning the barrel. The reason being I wanted to lead in the barrel using my preferred pellets, H&N Sniper Mediums. Shock horror, the accuracy has gone straight out the window. No matter what I do the accuracy is simply not there. I,ve tried reconfiguring the baffles at the front of the shroud. Shifting the barrel support back and forth. Testing it without the shroud. Fitting a silencer instead. Shooting it with nothing on the barrel. And shooting it without any baffles , all to no avail. It has had at least 300 pellets through it , so should be leaded in by now. I,ve spoken to a couple of friends who know all there is to know about airguns, real experts, but they are stumped for a solution. I,m so pissed off i,ve just gone an ordered a new R-10 to cheer myself up  :'( :'(  Knowing my luck, that will be faulty.  Black dog? you can F**k off too.  >:(

Offline seagate

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Re: Old gun re-built
« Reply #24 on: August 12, 2017, 05:05:44 PM »
So just to reiterate.

 Shooting accurate at club with hn sniper mediums.

 Then after shooting a load of bismags , j rothery labeled but made by hn -so same lead alloy.

 Cleaned barrel.

 Accuracy  gone.

 Did you use a pull through with patches or..?
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Offline Baggawind

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Re: Old gun re-built
« Reply #25 on: August 13, 2017, 04:06:29 PM »
I only use patches, lightly lubed with either white spirit or Napier gun cleaner. And Bismags are MUCH softer lead than Snipers. Remember, Snipers were originally made in the UK then were bought out by H&N. They have a high antimony content, thats why H&N had problems making them. It took a while for them to get the antimony content right , their words , not mine. I talked today to a guy at Cambridge HFT who had just serviced my mate,s HW100 and he said he,d had that happen a couple of times. Couldn,t make it out but finally resorted to lightly polishing the barrel with Solvol and toothpaste and it did the trick. Trouble is, I started with a cleaned barrel and it shot straight , straight away. I,m reluctant to start polishing the bore as it is so easy to over do it. Bloody airguns  >:(

Offline Gambo

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Re: Old gun re-built
« Reply #26 on: August 13, 2017, 06:16:05 PM »
Hmmmm, I know this isn't going to help Mel.......but you know the saying......if it ain't broke, don't fix it.

I've done the same thing myself........thinking I'm doing the right thing by cleaning the barrel, when all it did was ruin accuracy.

I've learned my lesson now, and only ever reluctantly clean a barrel if/when it absolutely needs it coz accuracy has gone off.


As an aside, unlike some, I never clean a barrel if changing ammo. Instead I will just shoot a charge worth of new ammo through it before doing a proper/final rezero. Seems to work for me.

Offline seagate

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Re: Old gun re-built
« Reply #27 on: August 13, 2017, 06:40:48 PM »
It's seems a proper mystery as to why some barrels go off a certain pellets , even identical ones from the same batch.

 My hw100 22 seems to like a clean barrel , a single pull through once every couple of tins or so. As does tx200 177.
 The others in my little collection are less needy.
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Offline Baggawind

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Re: Old gun re-built
« Reply #28 on: August 14, 2017, 04:23:56 PM »
You,re right Gambo, should have left it alone. I never cleaned barrels in the past, even when changing ammo. Started taking too much notice of what other people say I guess. Anyway, I think i,ve cracked it. I got up early this morning , went into the workshop and whipped the barrel off. This time I examined it more thoroughly. What I found was a slight tight spot at the breech then another even tighter section , about 50mm in and 55mm in length. I cured the breech end by going slightly deeper with a Morse taper reamer. The other tight section I cured by wrapping some fine wire wool around the alloy jag that comes with most cleaning kits and working it back and forth until the tight spot disappeared. And it seems to have worked. My mate turned up to collect his recently serviced HW100 so I suggested we went to the barn to zero them in. I took with me some Accupels , Crosman Premiers and my Sniper mediums. I figured Crosmans always worked in the past so why not now. And I was right. The accuracy is back  :D but not , strangely , with Snipers  ??? The only let down is the trigger. Guess I got the design wrong . Not by much mind, just one of the fulcrum points a few thou out. I,ll look into that, see if I can modify it somehow. I don,t think it will ever be as accurate as my mate,s HW100 but then I doubt many rifles are. That thing was cloverleafing at 50 yards.

Online airgunnut

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Re: Old gun re-built
« Reply #29 on: August 14, 2017, 07:23:28 PM »
I use the vfg cleaning system, it uses felt pellets that screw on to a rod, the intensive cleaning felts have brass fibres in them, there is also the cleaning paste which is like extreamly fine grinding past, the amount of lead this system gets out of the barrel is unbelievable.
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