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figgy

Wasted morning

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Thought I'd chrono a string on shots with my Daystate Huntsman Classis as I noticed a pellet fly low and missed a Magpie at 20 yards. Then a few more were off in the so called sweet spot.

With JSB exacts 8.44 gr .177 I was averaging 740 FPS so way off the 12lb limit, or at least the 12.7 I prefer them to be. Last night i stripped the bits out to get to the hammer spring and gave it a tweak two turns clockwise, numpty. It chronoed over so back a turn should put it right on. Nope allover the place. Lost light for chrono and gave up till this morning. About 300 pellets later after getting very poor consistency going back on forth from no spring tension not fireing any air I've got it more or less back where it was and very consistent at 755 FPS 10.6 ftlb with a spread of only 12fps from the full 200bar fill to 110 bar,  lots of duals and less than 5fps difference in the sweet spot the next two mags after reaching 110 bar drop to 740's then 730's still usable but not for me as I see a drop on target.  More than happy with consistency but not with it being a good fpe below where I'd like it.  At 11.8 fpe it was awful every shot was getting slower and slower and you could watch the guage drop. Obviously the Harper sling shot valve system has a very small working window for consistent shots over a spread.  Only good point was I've somehow got rid of the poor shots from 200 to 180 bar, with only ten FPS drop across that first 20 bar I'm pleased. 

If anyone has a Daystate with the Harper Slingshot system I'd be careful if you tinker and go little at a time and see how it goes.

Figgy

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Ha ha  if it saves others wasting half a day some pellets and wasted air it's worth it.

Edited by figgy

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If this test of yours was done whilst munching on a piece of quality pork pie, i do feel the pain you were in would have been easier to deal with ?

I suggest that my advice is heeded for your next attempt......

And lets not mention pickles or mustard, the pie will help on its own 🤣

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I was nearly chewing through my own knuckles, thinking why did I even start trying to make it better. 

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12 hours ago, figgy said:

I was nearly chewing through my own knuckles, thinking why did I even start trying to make it better. 

Maybe an old tip for the future that lowers blood pressure?

If it ain't broke don't fix it?

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I had a similar problem with mine in .20 cal. The power dropped off and slowly built up again shot after shot. It was up and down power wise as  well. Tried everything.  In the end I sent it back to Daystate for a service and asked them to set the power at 11.5, which they did. Its settled in again and is doing 11.8 with jsb exacts. I'm more than happy with it , being very accurate and consistant . Leave it to the experts.

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Depends how close to the quarry you are, but generally small game and pests.

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shooting a fox with a sub 12fpe airgun is illegal and inhumane ,a 12g shotgun  with no-2 shotgun cartridges is good for close range

shooting., a .204 or a.223 cal centrefire is  the way to go

.Atb brian

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5 hours ago, Jega said:

We never lose.......

We either win or we learn, never lose.

I like that 👍 

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On 21/10/2019 at 15:13, 222mark said:

I had a similar problem with mine in .20 cal. The power dropped off and slowly built up again shot after shot. It was up and down power wise as  well. Tried everything.  In the end I sent it back to Daystate for a service and asked them to set the power at 11.5, which they did. Its settled in again and is doing 11.8 with jsb exacts. I'm more than happy with it , being very accurate and consistant . Leave it to the experts.

Good call to getvthem to sort it if your struggling or rifke has issues. My only worry for you if you dont have an FAC is having it at 11.8 with jsb exacts if you were to get pulled and they put a bisley magnum in it you may find its over 12 limit

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