Barrel tuning

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    Imold
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    Hmmmm

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    aa_limited
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    salti the thimble is actually available in 177 22 and 25!

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    Salticon
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    Guys i texted Martin to comfirm before i posted that…. i wouldnt steer ya wrong..

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    aa_limited
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    I guess martin dropped the thimble 25 from his line up then for some reason latly

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    Imold
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    Well then I’m out…Back to a HMx .25 LRT then dang it..as I kick the can down the sidewalk with my head hung low…..

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    Imold
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    Martin should update his info under his BM500 listing and drop the X….

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    Greisdor
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    It seems that one could open up a 22 thimble to 25 — shouldn’t be too much trouble….

     

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    Jovi
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    Hi guys. My name is Jovi. I’m new of this forum. I’m from Spain. I have a BM 500, it has about 3 years. I’m reading and learning from you. Recently I bought a poly barrel because I had the normal LW barrel.

    I don’t know if there are more differences between my BM 500 and the BM 500 MK II. Are there?

    My poly barrel is 15,85mm of diameter. I wanted installed an air stripper of Rowan, the LG 110 air stripper natural aluminum body and cone, and the sales department of Rowan told me that it would be too loose on a 15,85mm because the air stripper that they sell is 16,00 mm.
    Ken, what is your air stripper? Is it the same as I would like? It’s good of the 16,00 mm? Your polished barrel is very beautiful!!

    My barrel is not indexing. Can I do the indexing to 15 meters? Or must be to 25 meters?
    Do you think that with the indexing and the air stripper, can I get a plus of accuracy?

    Thank you very much for your feedback.
    Sorry for my english, it’s not very good.
    Enjoy your day. ;)
    Jovi

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    Yrrah
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    “Jovi”Hi guys. My name is Jovi.  ……………
    My barrel is not indexing. Can I do the indexing to 15 meters? Or must be to 25 meters? …………

    Jovi

    
 You can use any distance to index. But best to start close, 15 m to 25 m is good because you will mostly get all your rotation groups on a sheet of paper.
    Yes some very good barrels will throw rotation groups of many cm’s even at those ranges.
    Seldom will you get a rotation with points of impact as close together as this even at 15 yards:

    Generally choose the barrel position which gives the groups at either 12:00 o’clock or 6:00 o’clock. 6:00 mostly allows for greater vertical scope click adjustments.
    Kind regards from OZ,   Harry.
     

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    Jovi
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    Hi Harry,
    Thank you so much for your explanation.
    Kind regards and have a nice day. :)
    Jovi.

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    Grin_Reaver
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    Generally choose the barrel position which gives the groups at either 12:00 o’clock or 6:00 o’clock. 6:00 mostly allows for greater vertical scope click adjustments.
    Kind regards from OZ,   Harry.
     

    
I’m a bit confused. Wouldn’t 6:00 o’clock allow less adjustment due to some clicks being used up to bring POA down to POI. My mind is occupied with a project that has already breached its deadline so I might have written something very dumb without realizing.  :*)

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    aa_limited
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    any one ele with raw rifles that have experience with barrel indexing. would like to see more example or peoples experience with it

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    jps2486
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    “Imold”Some awesome shooting right there Ken, 10m ? I’m sure if if we had a Airgun league around here I would have a single shot with a indexing Barrel but no clubs within hundreds of miles from me, sometimes I wish I lived farther south,east or west where Airguns are more popular but nothing wrong with being a lone wolf.

    
No one lives within a 100 miles of you, Imold.  Just kidding, but I know what problems you face trying to stimulate Airgun shooting with the locals. I lived in Wisconsin for a while and joined a large gun club.  No one was interested in Airguns.  They were a bunch of deer hunters who shot maybe a half box of ammo a year.  I moved to Florida and joined a bigger club.  I ran several ag matches that brought shooters from all over the state, but club members couldn’t care less.  Not even a club officer showed up out of curiosity.  A good friend in Connecticut just had an Airgun demo at his local club.  One guy showed up.  I guess when gunpowder is outlawed, they might become interested.  Anyway, enjoy shooting up there in the Northwoods.

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