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Question Pellet sizes

Discussion in 'Anything Airgun Related' started by jmsjabb, Aug 30, 2014.

  1. jmsjabb

    jmsjabb Active Member

    Messages:
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    Location:
    Chipping Norton
    Looking at .177 pellets, and the different sizes in mm.
    Firstly, what are the benefits of a smaller or larger pellet?
    Is it a case of trying them to find one that works, or are they sized for a certain purpose / discipline?
     
  2. Dag

    Dag Pro Poster

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    Location:
    Nr Leatherhead, Surrey
    I understand , and my Combro backs it up, that a tighter fit gives a higher pressure behind the pellet and hence higher muzzle velocity.
    My JSB Exact 4.52's certainly seem more consistent than 4.51's
    Dag
     
  3. Clubshot

    Clubshot Clubshot

    Messages:
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    6
    Location:
    North London. England
    Different Head sizes comes about by Different Barrel Manufactures

    Using Mandrells which might not be a true 4.50 - .177 Size

    Smaller pellets will fall through - even 4.50's in some Barrels

    BOB/R
     
  4. Ballisticboy

    Ballisticboy Posting Addict

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    Location:
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    It is a case of finding the pellet size which happens to fit your particular barrel. It comes about because pellets are rubbish at dealing with anything other than a perfect launch from a gun and so need to be an exact fit in your barrel though some designs are better than others. This is why some guns are happy with what are normally considered rubbish pellets which just happen to fit that particular barrel. Only trial and error will show you which size you need.
     
  5. jesim1

    jesim1 Kit bitch to the Stars

    Messages:
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    Location:
    Wigan/St Helens
    Cheap pellets are generally rubbish, but RWS Superdomes are probably the exception for a lot of guns!, but don't think the most expensive are the best, it does not work that way.

    It really is a trial and error affair to get the "right" pellets for your gun, stick to the main brands and try to get 20/30 of the pellets you want to check out. Try a good few through the barrel and then bench shoot 5 to 10, your looking for the tightest groups as each pellet will have a different zero point.

    James
     
  6. jmsjabb

    jmsjabb Active Member

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    Location:
    Chipping Norton
    Thanks guys. Trial pack ordered with 6 or 7 differing pellets to try
     

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