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Ultrastu

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About Ultrastu

  • Birthday 04/03/1973

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  • Gender
    Male
  • From
    Bristol
  • Interests
    Shooting airgun hunting and competing
    Pigeon decoying

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  1. OK just out of interest if you select a different tp setting is the gun consistent or does the energy creep up then ? . Maybe your knock open valve is sticking open longer than it should giving higher readings .this would probably be due to either .A. weakening valve spring .B a sticky valve stem (corrosion possibly ) or C . a deformed valve head .
  2. Desperate to recruit I suspect . It's probably also easy to make them fight when they have been dropped behind enemy lines .
  3. Next question .does your gun have any sort of short curve though it's entire shot Count .similar to an un regged gun ? Ie starts lower on power raises to a maximum energy around 150 bar then drops off slowly till its below acceptable power levels .? If so then the reg is stuck open and your shooting of main cylinder pressure .. Also just looking at fx crown mk2 images they have a 3 stage transfer port adjuster. Does yours have this and does it work and what's it set at and does it make a difference if adjusted . Shot to shot sd will usually be better if a narrow t.p. is selected over a large one . I think .
  4. I think that if your hammer spring is so easy for you to adjust , then maybe its possible that it's self adjusting .though they usually tend to wind out so power goes down not up .but I don't know your mechanism exactly . If you have just altered it and the sd has dropped to 2 I feel that this is the place you should be looking and not the reg . See how it is tomorrow and report back .
  5. So looking at your shot strings above .on the 2nd of March you were getting around 714 fps with little a 9 fps spread then 12 hours later ,next day you were getting around 730 fps with and a spread of 23 fps . So this sounds to me like a hammer spring issue .I'm no reg expert . But the reg (measures out a set pressure into the plenum ) and the knock open valve takes air from that plenum instead of the main reservoir. When a reg tends to fail the washers start to stick and the pressure in the plenum either fills too slowly (fast shooting can result in low power shots ) or it doesn't fill the plenum to the correct pressure = the odd low power shot. If the reg is sticking open then you will be pulling air directly from the main reservoir + plenum and this can give higher power readings . But if the hammer spring isn't consistently pushing the hammer and knocking open the main firing valve then the best reg in the world isn't going to give you consistent readings. If the hammer has too much oil/lube it can alter the speed that it is released .the spring can bind and then release shot to shot (look at the ends it may be broken ) the fact its been left over night and possibly warmed up suggests that lubrication somewhere may be the issue . Look to the hammer assembly first its easier to diagnose and fix . Check the knock open valve is OK also .orings and return springs .then lastly the reg . Regs tend not to like being adjusted too much .the more you mess with it the less reliable it will become (usually ) If the reg is at fault then its either a reg service or replacement .
  6. I've just picked up a 20 year old mk1 bsa lightening .it's in excellent external condition , and looks to have been worked on internally . It's running at around 9.5 fpe with jsb rs .177 .and is so smooth to cock and shoot its amazing .I thought it may have been a gas ram conversion at first but no, I found the spring OK. Accuracy is excellent out to 35 yds with most pellets tried , it doesn't seem overly fussy but definitely preferes the lighter offerings . It just goes to confirm my statement above that if you find an older well run in gun that's in harmony it will be a joy to shoot . I used to have a hw 30 that gun was easily the most accurate springer I've ever shot .but only to 30 yds or so when the power dropped off a bit too much .
  7. I use tabasco original on loads of stuff .pastas .rice dishes .beans .meats .nothing escapes . The green tabasco I love on pizza The Chipotle also on pizza but also on meats like sausages and steak. The habenaro (hottest ) goes in chilli's and on rice dishes . And the siracha goes on fish dishes it works so well . My scotch bonnet (not tabasco ) goes in fajitas and other Mexican dishes hot hot hot .
  8. Mine I starting to grow I expect I will cut it mid march when we get a dry afternoon .just a little off the top .
  9. It's worth firing every now and again .as the knock open valve can get stuck in the closed position and get slightly deformed with all that air pressure forcing it shut constantly. Think of your tyre on your car .fine when being constantly used but leave your car for a few months unused and the rubber on the lower side starts to crack .
  10. I do use .25.fac but not on squirrels . I dont take elevated shots (ie squirrels up trees ) as they just go right through them and keep going and going .a.25 is too heavy and when it eventually comes down it will still have plenty enough energy to do damage to what it hits .not safe . A.177 fac is another thing entirely .ideal use 8.4 grn jsbs and they act just like a sub 12 .177 when they come down . I've taken squirrels out to 65 yds with mine plenty enough energy .and a flat flat trajectory . Mine rock along at 970 fps .
  11. No worries .conversely to all I said above If a pellet is all over the shop in the first magazine then its unlikely to become a best pellet ever unless its doing something like silencer clipping or its damaging an oring or something - and that could be solved . The usual jsb .h+n crosman . Qys pellets will be the top performers in most guns .
  12. I would agree with this . The issue often is that a new pellet tried in your gun often shoots well for the first 5 - 10 shots as its lubed on the previous lead in the barrel .then accuracy often falls off on your second magazine .the barrel is now re leading to the new pellets and sometimes comes back on song around 50 plus shots sometimes not at all . Also a gun should ideally be shot through its full charge (pcp ) as accuracy can change hugely depending on the fill pressure in the gun . One pellet can love the top end of the fill but hate the lower pressures and vice versa .some pellets don't care and will shoot well through out. Some pellets will created different power levels from your gun . Some can change the optimal working pressure range . For example a heavy pellet often will give a higher shot count than a lighter one . As the exahuast valve shuts earlier saving air .the heavier pellets often still produce good energy at lower pressures than a lighter one . You can't test all this with 30 pellets . More like 300 .
  13. So this is exactly it . A jsb heavy around 10.3 grns with bc of around 0.03 that will probably be super accurate at range and carry plenty of retained energy . A 10 .5 grn slug that probably won't sit well in your mag (fall out, into the action - yes ) and not probe well into the breech .May have an initial good bc but as it yaws and rolls loses that bc quickly at range and accuracy drops off . Total bc will be lower than that of the pellet . They don't expand at sub 12 at all .hell they don't expand at fac either . More expensive harder to get hold of .much less consistent than pellets - and supreme consistency is the key for repeatable accuracy. I gave up . but please try and report back I know there are some people who love slugs even at sub 12 .and if you can get one that really suit your barrel - buy loads the bc can be impressive if they don't lose it past 30 yds (which is where a slug " should " have its advantage if it falls apart past 30 yds compared to a pellet then seriously don't bother .
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