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Precision Reloading For Long Range Hunting by Jerry Teo

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  #8  
Unread 12-13-2007, 01:04 PM
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Precision Reloading by Jerry Teo

How can I get this info

Thanks Stephen
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  •   #9  
    Unread 12-13-2007, 02:14 PM
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    I like the idea of using powder to measure case volume instead of weighing cases.

    Thanks

    Jerry M
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      #10  
    Unread 12-13-2007, 02:58 PM
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    Quote:
    Originally Posted by stephen newberry View Post
    How can I get this info

    Thanks Stephen
    http://www.longrangehunting.com/arti...-reloading.php

    The link is also in Len's first post at the top of the page.

    James
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      #11  
    Unread 12-13-2007, 03:52 PM
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    If you are really interested might look into attending the class that Speedy is giving----you will learn what to do and more importantly how each operation relates to the end result... When you get finished your knowledge base will be expanded.. Week 3


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      #12  
    Unread 12-17-2007, 12:06 PM
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    Neck turning

    Excellent write-up! I have a question about neck turning.
    You suggest neck turning to clean up 70-80%. I would think turning to a specific diameter would provide more consistant results.
    How does neck diameter relate to throat diameter?
    How do you determine throat diameter, chamber cast?

    Thanks
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      #13  
    Unread 12-17-2007, 01:47 PM
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    With hunting ammo, I do not like having my necks thinner then 14thou. Simply reduces the chances of neck splits or bullets slipping. This ammo has to work first and foremost.

    With US commercial brass, there can be a slight variation in the thickness as you go around the circumferance of the neck. Is this a big deal? Not really but since we have the tools why not just tweak it.

    By removing the high spots, the neck is of consistent thickness yet still thick enough to offer the higher neck tensions needed in mag fed ammo. Odds are you will find it hard to see any accuracy improvements on paper but it makes me sleep better.

    Consistent neck thickness helps with consistent neck release which helps with bullets leaving straight so they enter the bore square with the rifling and fly straight to the target. Proper annealing is just as important as neck thickness.

    ALL hunting chambers should have enough neck clearance in the throat so that a bullet will easily fall into the neck after firing. If not, removing some material from your case neck or enlarge your chamber. The last thing you want is for a bit of moisture to get on your ammo and cause a serious pressure problem by jamming up the case neck in the chamber.

    I see a number of people building to BR clearances - actions and chambers - in a hunting rig. BAD IDEA!!!! Sooner or later, moisture or dirt will enter into the equation and there will be some serious problems.

    We are optimizing the hunting rifle and ammo, NOT making a BR speced hunting rifle.

    Jerry
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      #14  
    Unread 12-18-2007, 06:21 AM
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    Quote:
    Originally Posted by Mysticplayer View Post
    With hunting ammo, I do not like having my necks thinner then 14thou. Simply reduces the chances of neck splits or bullets slipping. This ammo has to work first and foremost.

    With US commercial brass, there can be a slight variation in the thickness as you go around the circumferance of the neck. Is this a big deal? Not really but since we have the tools why not just tweak it.

    By removing the high spots, the neck is of consistent thickness yet still thick enough to offer the higher neck tensions needed in mag fed ammo. Odds are you will find it hard to see any accuracy improvements on paper but it makes me sleep better.

    Consistent neck thickness helps with consistent neck release which helps with bullets leaving straight so they enter the bore square with the rifling and fly straight to the target. Proper annealing is just as important as neck thickness.

    ALL hunting chambers should have enough neck clearance in the throat so that a bullet will easily fall into the neck after firing. If not, removing some material from your case neck or enlarge your chamber. The last thing you want is for a bit of moisture to get on your ammo and cause a serious pressure problem by jamming up the case neck in the chamber.

    I see a number of people building to BR clearances - actions and chambers - in a hunting rig. BAD IDEA!!!! Sooner or later, moisture or dirt will enter into the equation and there will be some serious problems.

    We are optimizing the hunting rifle and ammo, NOT making a BR speced hunting rifle.

    Jerry
    Thanks for the clarification. You remove enough material to uniform the OD without thinnng the more than .014". The fit criteria being a free drop into the chamber after firing.
    I've reloaded for many years without neck turning but now that I'm gettng started in long range, I want to understand better what I've taken for granted for so long.
    I'll be getting a custom 6.5 x .284 in a week or so and want to move my reloading techniques to a higher and more precise level. Thanks again.
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