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OCW load analysis help please

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  #1  
Unread 03-09-2013, 04:15 PM
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Join Date: Apr 2010
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OCW load analysis help please

Hi!
i bought a second hand savage 12 FLVSS in 223 rem.
i received my reloading stuff this week and prepared 21 cartridge from 23.5 to 25.3 gr. in .3 increment. they were shot in a round robin fashion as asked by the method. the result are oustanding for me. i never had such good result, especially on the first try. but it's my first varmint rifle also. so since i got a 21 shot 1.06" group. ( 19 shots in 0.680'' if i take the two outsidemost out of the group) if i lay the 7 targets on top of each other, i don't really know what to use for ocw.
since h335 is apparently temp sensitive i tought 24.1 gr. would be good.
the temp today was about in the middle range of what i would encounter in the field (60-80 deg for rockchuck in summer- 10-20 deg for coyote in winter
25 gr also seem good ,and would give more velocity. but a more consistent load is more important to me.
so i would like your inputs on this from you pros out here


temp: 45 deg. no wind
bullet: 55 ballistic tip
powder: H335
col. 2.300
brass: new win.
primer: fed 205

note: 25.3 gr. has 2 shots in the left side hole


Last edited by 300remum; 03-09-2013 at 04:57 PM.
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  •   #2  
    Unread 03-09-2013, 04:20 PM
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    Re: OCW load analysis help please

    I would say 25 and 25.3 are your best, they have the least amount of verticle, and their POI are very similar.
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      #3  
    Unread 03-09-2013, 04:21 PM
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    Re: OCW load analysis help please

    I would go with 25gr, next step would be about 5 different primers, then I would do the distances off my lands. I predict a tac driver when your done.
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    Joe
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      #4  
    Unread 03-10-2013, 08:31 AM
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    Re: OCW load analysis help please

    thank you guys.
    i will load 25 gr. and try different COL.
    since 2.300" is my max mag lenght, i will try 5 shot groups of
    2.300-2.990"-2.980"-2.970"-2.960" and 2.950"
    sounds good?
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      #5  
    Unread 03-22-2013, 10:44 PM
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    Re: OCW load analysis help please

    I think instead of just going with 25gr, I would load up to 25.6gr(if pressure allows) and see if my grouping and velocity was pretty much the same. If so, I would go with 25.3gr and try seating depth changes with that. This would provide a load that is not too sensitive to changes such as temperature or if your scale happens to be a little off one day to the next. This would give you .3gr either way to deal with. This way anything from 25-25.6gr would prove to shoot well over all seasons and conditions.
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      #6  
    Unread 03-23-2013, 01:18 AM
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    Re: OCW load analysis help please

    I'm pretty sure once you go to changing primers or seating everything is gonna change.
    Bigtime
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      #7  
    Unread 03-23-2013, 09:23 AM
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    Re: OCW load analysis help please

    thank's everyone for the help
    last week i tested this load a bit further.
    here is the three 5 shot groups i got using 25 gr and a coal of 2.300 as in the ocw test.







    the first pic that have 2 holes on the left and 3 on the right was the last group i shot. a young gentlemen shooting next to me noticed that i was not consistent in my grip. and told me that some shot i was wrapping my thumb around the grip, other times i was putting my thumb on the back of the grip.
    so for the last 5 shot, i tried 3 shot one way and 2 the other. i guess he was right.
    it's nice to have someone watching. it helps pick up things i was completely unaware i was doing.
    it's pretty new that i go to a range. i was shooting alone on my uncle's land before.
    but i really like meeting experienced shooters

    i tried also at 2.290'' and groups enlarged in the .75" range
    at 2.280 it went in the .80-.90''

    i also tried just a 5 shot group at 2.260 that went 1.1".

    so i guess until i can put my hand on other brand of primers i will shoot some more and try to improve the driver it may help more than messing with the load
    but i will sure try melloyello's advice and try 25.6 to see if 25.3 might be better.
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