How to create a accurate load

Discussion in 'Reloading' started by Laker_Taker, Nov 10, 2007.

  1. Laker_Taker

    Laker_Taker Well-Known Member

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    Hello,
    I have been playing with my .270 weatherby magnum and can't get 140 accubonds to shoot. Can someone tell me how to create a perfect load from start to fininsh.

    1.New .270 weatherby brass
    2. IMR 7828ssc starting load 67 grains per nosler book (I have many powders I just picked one)
    3. Fed 215 primers
    4. I do have a chrono

    Can someone get me started in the right direction? I guess from case prep to the load itself to shooting and what to look for.

    Sorry for the rookie questions but I reload for 8 guns and never had this much trouble.

    Thanks Aaron
     
  2. devildoc

    devildoc Well-Known Member

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    What twist rate is your barrel? how are you measuring seating depth? How are you setting your headspace with your dies? etc.
     

  3. Laker_Taker

    Laker_Taker Well-Known Member

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    The barrel is 1 in 10 twist. My seating depth is how far I can seat them in the magazine. I don't know the correct way of doing this. Because of the freebore. I dies are set up per RCBS instructions.

    hope this helps
    Aaron
     
  4. oldfamily

    oldfamily Well-Known Member

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    Does the rifle shoot any other bullet well. The rifle might just not like the accubonds.
     
  5. Laker_Taker

    Laker_Taker Well-Known Member

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    I can shoot 130 grain accubonds at 100 inch and a half. I am having trouble shooting 150 grain bullets as well. I only have about 40 rounds down the pipe.
     
  6. radnur22

    radnur22 Well-Known Member

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    make sure your bore is clear from copper fouling, then start with the development of loads.
     
  7. oldfamily

    oldfamily Well-Known Member

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    When I shot a mark V 257 weatherby it would group like that until it was loaded with a hot load then it started to tighten up. I would clean the heck out of the bore and start working up a load from low to high range of powder. If you have other powders ( I can not find my Nosler book at this moment) I would try to see if it liked any thing else with the same type of from low to high charges. oldfamily.
     
  8. Festus

    Festus Well-Known Member

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    LT,

    I have a .270 wby and fought this battle for quite a while. Tried many different powders with no good results. I finally tried some 150 gr. partitions and it settled right down. I had to conclude that my rifle did not like 140 gr. bullets.

    Festus
     
  9. J E Custom

    J E Custom Well-Known Member

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    L T

    After wasting thousands of test loads on different rifles/pistols
    I decided to use the method recomended by ED SHILLEN and
    it saves lots of time and components.

    #1 After prepping your brass weight sort (I try to stay within
    1gr).
    #2 Select several powders that reach max pressure at 100% case
    density.
    #3 Load a starting load with several different primers that the loading
    data recommends (rem,win,cci,fed )in the size range (Large rifle,mag)
    #4 pick the bullet weight you would like to use and load 3 to 5 of each
    load.
    #5 Chronograph all loads( What you are looking for is low standard
    deviations ) under 15 but single digit numbers are very good. this tells
    you that you have a very consistent powder/primer combo.
    #6 With the best load found start with .030 bullet to land clearance
    and reduce to .005 just off the lands in .005 increments for best group
    size.

    At 100yrds a poor load and a good bullet may shoot good groups but
    when you shoot longer ranges that same load will probably shoot poorly.

    And allways start with a good stock to barreled action fit that could
    prevent even the best load from shooting.

    Works for me
    J E CUSTOM
     
  10. Mysticplayer

    Mysticplayer Writers Guild

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    Article

    There is reload and tuning article on the homepage that might be helpful.

    Jerry
     
  11. Laker_Taker

    Laker_Taker Well-Known Member

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    J E,
    Thanks for the info.
    One question how do you know how far your bullet is seated off the lands? Is there a tool out there that can assist with this process? Currently I have the bullet as far out as the magazine will let me. Because the gun I'm having trouble with is a .270 Weatherby mag. how much will the free bore be an issue?

    Thanks Aaron
     
  12. devildoc

    devildoc Well-Known Member

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    Several gauges available, I use the stoney point (now Hornady) comparator with head & shoulders gauges, Sinclair makes a good one too. Freebore does make a difference every bullet likes a different jump to the lands some like to be seated in the lands some like as much as .02" of jump (in my experience). And of course the individual rifle has it's own pallate. You can do it without the gauges of course. Just seat long and keep screwing down the seater plug untill the action closes easily, then go from there in increments, though it's much more precise with the gauges.
     
  13. J E Custom

    J E Custom Well-Known Member

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    LT

    Weatherbys have lots of freebore and normally cant be reached
    even if loaded very long.

    Neck size only and a near zero headspace will be achieved then
    freebore is not a problem.

    Some bullets seem to like lots of jump (.050 to .060) like the Barnes
    XBT.

    I like the accubond and have had good luck loading it and also the
    partition.

    If you have a light weight barrel you may have to use tip pressure
    to settle it down.

    Look back on bullets,barrels and blistics to a post called Weatherby
    mark 5 pressure,by 300 Winnie, dated 08/19/07 and there is a method
    on how to apply tip pressure described that may help.

    Good Luck
    J E CUSTOM