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Part #2
After fitting and sighting in a scope at home (along with some quick pellet testing), the next stop was a practice day at the range. The gun shot very impressively, good accuracy and it felt really nice to use with a nice firm thud on firing. My thoughts were backed up by another member who was equally impressed.
However, at the following session a few days later I started to notice that the accuracy was dropping off and the gun was starting to feel harsh compared to what I'd experienced earlier. I put it aside and moved on to another gun.
Back in the workshop I proceeded to strip the gun down as I'd ordered a TBT kit for it at the same time I ordered the gun - so I'd be killing two birds with one stone. What I found though was pretty disappointing, but unfortunately all too common these days from my experience. The compression seal had a chunk out of the side of it which explained the changes I'd noticed. The culprit was a small slither of aluminium jammed into the intersection of the cylinder wall and the breach end piece. It really was was jammed in tight after a bit of use and there was no budging it with a brass rod.
Really it was a warranty issue but with the supplier in the Netherlands it was going to be more trouble than it was worth trying to get it resolved so I opted to sort it out myself as I had the gear on hand.
I quickly came up with the answer in the form of an old socket (I keep all my old tools in storage for this type of application). After grinding off the chrome plating I machined it down to size in the lathe and then formed a cutting tooth with a small file. With a long 3/8" extension I was then able to successfully cut away the offending piece of aluminium.
This is not the first quality issue I've dealt with on new air rifles. I've also experienced issues with several other brands including FX and Diana, and the latest being my new HW30 which I've just stripped down straight out of the box. It's fine internally, but a small dingle from MIG welding the front stock support bracket was simply left and blued over. Admittedly it's not seen when the stock is fitted, but for a high end airgun it is pretty sloppy in my view.

Next, a new seal was sourced from Ron Young, the internals were de-burred and then I set about fitting the TBT kit - which included a replacement spring. Now this is the second TBT kit I've purchased and fitted and whilst the resulting improvements have definitely been worthwhile, neither kit has been straight forward to fit, with both requiring multiple rounds of modifications and test fitting in order to get the guns to cock successfully. A little bit more effort than the videos would suggest and likely to be a challenge without the equipment that I'm fortunate to have at my disposal.
Lastly, the front barrel weight was replaced with a slightly longer suppressor for a bit more leverage and to save the bluing on the original part. A 6-24 Riton scope has been fitted (an absolute bargain purchase off Trademe) with a separate stop block made up and fitted behind the rear scope ring to allow me to mount the scope as far forward as practical.
With everything back together more pellet testing at home produced an outstandingly good result from the 8.7gr JTS Dead Centres. Chrony results for that session were a very consistent 830 odd FPS and 13.5 FT Lbs.
The gun is now to the point that I had originally planned for it to be and ready to spent lots of time at our local range having some springer fun!
------------- Daystate Red Wolf .22 FX Dreamline .22 Diana Outlaw .22 AA S410 .22 HW98 .177 HW30 .177 Diana 340 E-Tec .177 FWB Sport 124 .177 Gamo 900 .22 Baikal IJ-22 .177 Crosman 2240 Custom .22 Brocock GP .22
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