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what change in pwoder in a 223 would make a difference

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  #1  
Unread 07-31-2009, 11:14 PM
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Join Date: Jun 2008
Location: christchurch, nz
Posts: 415
what change in pwoder in a 223 would make a difference

hey im doing load development for a .223. using ADI 2208 (varget) and 65gr sbt. have just done a ladder test my i think i may have done to small of powder incriments. did .2 grain differences. is that too mall. should i do like .5 grains? what experience does everyone find.
cheers
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  •   #2  
    Unread 08-01-2009, 02:55 AM
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    Join Date: Sep 2007
    Location: Maffra Victoria Australia
    Posts: 11
    Re: what change in pwoder in a 223 would make a difference

    G'day foreign

    I used .2 gr increments from 24.0 to 26.2 of 2208 behind a 69 gr SMK when building up a load for F Class. In hindsight this may have been too large a range to cover in a Savage 16FSS [22" barrel]. From my tests [in my rifle] 25.2, 25.4 & 25.6 gr 2208 all had very similar POI versus POA so I have settled on 25.4 gr 2208.

    As a generalisation, I have found that the best [most accurate load] is generally towards to upper end of the load window for any given range of data. Consult quite a few sources [eg ADI site, Sierra. Hodgden, Hornady, etc] before settling on the range to test & monitored for pressure signs VERY closely.

    Regards
    __________________
    Iggy
    Savage 22LR .223 Rem .308 Win
    Victoria Australia
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      #3  
    Unread 08-01-2009, 06:38 AM
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    Join Date: Jun 2008
    Location: christchurch, nz
    Posts: 415
    Re: what change in pwoder in a 223 would make a difference

    hey iggy
    cheersw for the reply. yea i seem to have found the same powder charde is seeming to hit the same point.
    i have alot more testing to do though
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      #4  
    Unread 08-03-2009, 09:48 PM
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    Join Date: Dec 2001
    Location: Potters Hill, NC
    Posts: 1,688
    Re: what change in pwoder in a 223 would make a difference

    When I loaded for the .223 I usually tested in .5gn increments and further refined when I found a suitable load. I did this with Varget, H4895 and W748. Looking back through my reloading journal I find that my tightest groups were at the upper level of the powder range I tested, regardless which powder or bullet.

    These loads were for a 1-9" Savage:
    69gn Nosler Comp/26gn Varget/Rem 6.5 (.7565")
    69gn Nosler Comp/25gn H4895/Rem 6.5 (.303")
    69gn Sierra MK /25gn H4895/ Rem 6.5 (.212") 3004fps
    55gn NBT /26.5gn W748/Rem 6.5 (.136")

    Hope this helps. JohnnyK.
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