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Popsbengo

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Posts posted by Popsbengo

  1. On 5/3/2019 at 7:30 PM, MichalS said:

    I shot the test at 95m measured by laser range finder. Even if You assume +/-1m accuracy the scope is still off...

     

    On 5/3/2019 at 7:30 PM, MichalS said:

    I shot the test at 95m measured by laser range finder. Even if You assume +/-1m accuracy the scope is still off...

    Most ballistic apps have a scaling field - ie you can input a fixed multiplier to compensate for your measured error.  Providing the scope has no lost motion in the mechanism and is linear then you would be sorted.

    Having said all that I agree with earlier comments' - you're chasing unicorns. The errors you have are "noise" compared to atmospheric differences and wind.

  2. I expect a number of forum members will have received the British Shooting Show:

    Quote

    "An official statement from the British Shooting Show
    The British Shooting Show will always support the promotion of shooting and regulated hunting as sports and recreational activities, where they are carried out ethically and within the law. The British Shooting Show will always support good practices, and ethically and environmentally managed shooting and sporting activities that promote the highest standards to those who participate in them. The British Shooting Show has not banned any individual or organisation and will not do so unless it is legally obliged so to do.The British Shooting Show recognises that there are those who oppose, for their own reasons, the activities of others. The British Shooting Show is content to recognise the rights of third parties to oppose hunting, shooting and gun ownership, but maintains the right of all participants in regulated hunting and shooting sports to go about their lawful legal activities. Wherever possible, the British Shooting Show will consider all representations made to it and provide a platform for peaceful and meaningful discussion of all relevant issues."

    What's all this about?  Is it the aftermath of the General Licence upset?

    Seems unnecessary to me

  3. I have always found Vortex to be poor with regard to parallax and diopter registration - ie both in-focus images perfectly aligned in the same plane.  I have had three Vortex scopes - otherwise fine.

    My S&B PM2 is perfect, the side wheel indications are spot on and registration is perfect.  My Nightforce is almost as good (but not quite). 

  4. I have recently purchased a P14 Enfield of an elderly chap in the club who has had it for +50 years.  He also had a spare enfield barrel which I took too just in case the one on the barrel was shot out.  I'm happy to report it isn't, so I have a spare barrel to sell !

    I am told, and inspection seems to bear it out, the barrel is a genuine spare part from the War Dept. It's never been on an action and never fired except for proofing (I assume).  It's "in white" ie not blued or corrosion treated.  Looking at the bore with my Hawkeye it looks excellent, no corrosion (it was stuffed with grease) and no evidence of heat or ware that I can see.  The crown is good.  The barrel is slotted for the standard foresight so I assume the barrel thread is timed.

    1:10 left handed,  5 groove,  .303 Brit.

    It's obviously an FAC item so I would want to do any transaction face to face.

    How much ?  I haven't a clue as to what it's worth but I'll accept  £250

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  5. Just now, Laurie said:

    I'm intrigued by a spot-check on 6.5X47L as it's pretty difficult to get outside of the MoD envelope at least with anything other than light varmint bullets. 6X47 or various other 6mm wildcats could easily be an MV issue though.

    Everybody 'thinks' HME / ME on this topic, but remember there is an MV ceiling too that in effect rules out 204 Ruger, 22-250 Rem and many SAAMI / CIP sixes with anything less than the heavier match bullets in fast-twist barrels.

    https://nra.org.uk/nra-bisley/ranges/latest-range-information/range-regulations/ 

    1,000 m/s = 3,280 fps

    exactly right.

  6.  

    10 minutes ago, bradders said:

    At the risk of thread drift. not something I have a problem with......but some mods certainly do, the SSC situation was not the best managed, and was taken advantage of by crusty old men (the type who just can't be told when you see them alongside doing something wrong, who just signed off and handed them out Willy Nilly

    I'm lucky in mostly all I do is shoot the CSR League and our club is well established that they know me, but they still ask for my card when signing on....and that is fine by me

    Blimey, you mind reader! I was about to make a similar comment.  The process was abused for sure.  I think Georgina has a grip on the admin now, it was/is a big task but the NRA team have done a good job.

  7. 13 minutes ago, Stephen curry said:

    Why does the information on reloads. Powder charges etc etc vary in most manuals. Iv reloaded for a number of years but it must get some folk mixed up.why arnt they the same or near too each other.sure it's been asked before but there you go.thanks steve

    I'm not sure the recommended numbers do vary that much considering but I'd guess in descending order of influence:

    Different test barrels and actions

    Different batches of powder, possibly the recipe has been tweeked/changed over the years by the manufacturer

    Different ammunition assembly practice

    Component tolerances (different manuals use different brass, primer, bullet combo)

    Different measuring standards

    Different editorial constraints (a polite way of saying lawyered-up when it comes to maximums)

  8. From NRA General Range Orders:

    c. Cartridges which, when normally loaded, would exceed the ME/MV limits of any specific range, may not be used, on that range, even if downloaded.

    How do we interpret that for a wildcat especially a calibre designed to shoot flat and fast?  Short of chrono'ing or running QL to model the MV to check it's below 1000m/s (all ranges at Bisley) it's a difficult call.

    Some popular calibers stoked up and shot through long barrels will exceed 1000m/s.  So is it reasonable to assume necked down cases will have significant increased MV than the parent and therefore certainly possible to breach limits ?

  9. 16 minutes ago, Re-Pete said:

    At a recent shoot on Stickledown, NRA guys turned up unannounced with a Labradar and measured my 6.5x47 MV. The conversation that followed indicated that spot checks would be introduced to ensure compliance with the aforementioned new rules. This can only be a good thing, if it gets off the ground..............

    Pete

     

    That'll put a cat amongst the pigeons !

    I wonder if this will be taken up by others - like DIO ?

  10. 5 minutes ago, Chris-NZ said:

    The context here is the NRA "law", not the law of the land

    On a military range (which many of us use in the UK) the NRA rule is "law".  Wildcats could be used but it's up to the RCO to decide if they can trust that the necessary tests have been done to ensure it's within range limits and that no risk to the shooter and others will reasonably occur.  If it's HME the appropriate rules apply.

    If it's a stranger to me as RCO, presenting wildcat loads for use, I'd want to reasonably satisfy myself that the person is competent and truthful about what they have.  If in any doubt it's a firm no from me.

  11. 10 hours ago, ColinBR said:

    What alternatives are you talking about that are more accurate? 

    I'm not arguing "more accurate" I'm just saying CNC does not automatically equal magic accuracy.  For example, if you need to turn many components the same, a copy lathe will do the job.  A jig borer can be set up to gnats pubic hair accuracy, a match grinder (many made by the Swiss) will turn out near perfect components.  As you say, in-cycle gauging is valuable but not limited to CNC.

  12. CNC works to tolerances just like any other process machine. For sure a well set up, top quality and properly maintained CNC is pretty accurate and repeatable (tool wear compensation accepted) however CNC machining isn't inherently more accurate or repeatable than alternatives if jigging/fixturing etc is sorted.  Most CNC turning and milling use ball-screw driven by encoded axis motors - the point being is that the position feedback is indirect and subject to lost motion errors unlike a linear feedback digital readout directly coupled to the machine axis.  CNC is not the same as "super accurate".  

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