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measuring power with out a chrony

Discussion in 'Anything Airgun Related' started by bcham, Jul 1, 2012.

  1. bcham

    bcham Busy Member

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    just got a second hand bsa lightning,and was wondering what power it was pushing out,i dont own and cant afford to get a chronograph just yet,
    its a 22 caliber,its hard to cock so i think the main spring is ok,
    but 2 shots out of 4 did not penetrate a marksman pellet tin,at 20 feet,is there another way to test the power,
     
  2. Fisherboy

    Fisherboy Engaging Member

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    Take it to your local rfd mate, they will probably run a few shots over a chrony for you FOC or for a few quid, without a chrony there is no accurate way to measure the output.
     
  3. Andy

    Andy Administrative Staff Member Founder

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    You can shoot at two known distances and measure the difference in POI, put the details in to Chairgun and it will tell you the power.
     
  4. Stot

    Stot Posting Addict

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    Or you could try the beta of Chrono Connect Mobile if you or someone you know has an Android phone. Its pretty accurate if you take your time and measure the distances properly.

    Cheers
    Stot
     
  5. stevemandm

    stevemandm Honorary Member

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    i'm in wakefield mate, an have a chrono.
    if you want to come over i will happily test it for you - pm me if interested
     
  6. Pathfinder

    Pathfinder Donator

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    Last edited: Jul 5, 2012
  7. theobencarbine88

    theobencarbine88 Posting Addict

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    .22's dont have great penetration at range but i would have thought a pellet tin at 20 feet would be no problem. guess would depend on pellet choice as well. only way is to get it chrono'd really.
     
  8. bcham

    bcham Busy Member

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  9. stevemandm

    stevemandm Honorary Member

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    yes mate, v good and portable, just ensure that the bore is lined up when testing - heard of some guys not correctly aligning the bore, which resulted in destruction of the chrono ! also, when lined up, secure the barrel/silencer with a strong elastic band to keep in place. dont pay over the odds, you can buy direct for £40.80 from link below. also find you tube link for quick view.
    let us know how you get on with it wont you.
    http://www.chronoscopes.com/
    http://www.youtube.com/watch?v=h85HnJN_Zrs
     

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