Author Topic: This must have happened before...to someone, somewhere....  (Read 2412 times)

Offline mick1

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This must have happened before...to someone, somewhere....
« on: April 17, 2010, 05:58:05 AM »
I've had the Hunter 440 for 2 years; fitted a GRT 111 trigger soon after I bought it and I've shot 3000+ pellets through it. The Hunter shoots well and is capable of decent accuracy. About a month ago I noticed that cocking it had got much easier - a child of 10 could manage it.  I noticed too that the recoil was less than before and the noise when firing was much milder, more like a knock on a door. I don't have a chrono but my guess is that the velocity has dropped quite a bit.  I could probably have appreciated this magnum air gun in it's more civilized guise but something else happened which has to be investigated.  I was doing a bit of target shooting when all of a sudden I found that after I had loaded a pellet the barrel wouldn't close - it came to a stop, pointing downwards at about 45  degrees to where it should be.  I put the safety catch on, got my torx driver and removed the stock.  That allowed the barrel to close in its proper position.  I replaced the stock and resumed my target shooting session.  About six shots later the same thing happened - the barrel wouldn't close.  I couldn't see anything obviously wrong when I took the stock off again but now I have to find the cause of the problem.  One possible cause that seems to fit the symptoms is a broken spring. But guys,this must have happened before, to someone, somewhere...Can anyone confirm or refute Dr. Mick's diagnosis before I get to work making a spring compressor.
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Offline Gene_SC

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Re: This must have happened before...to someone, somewhere....
« Reply #1 on: April 17, 2010, 07:05:33 AM »
Yep, you have a broken spring. Do not keep shooting it or you will damage your cocking shoe or worse. You can buy a replacement spirng and new seal from JM, or send it to a reputable tuner to be repaired and tuned.
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Offline Tim40189

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RE: This must have happened before...to someone, somewhere....
« Reply #2 on: April 17, 2010, 02:28:33 PM »
Mick,

Get to work on that spring compressor!!!  Samething happened to my Whisper a few months ago.  Be warned though, since then I have bought a lathe and really got in to working the internals of the guns.  This is not a hobby anymore.....it's an addiction!  Good luck and as Gene said, contact JM and get some parts on the way.  Take your time with the job and follow the steps in the tune-up guide in the library, if ya get stuck or confused there's always the forum here and lots of great people that will help in any way.

Tim

Offline mick1

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RE: This must have happened before...to someone, somewhere....
« Reply #3 on: April 18, 2010, 09:59:39 PM »
Thanks guys.  This afternoon's project is making a spring compressor...
Mick
\"Good chance for dignified masterworks!\"