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Thread: Forming 8 X 58R Danish Krag fron 45 X 90 Brass

  1. #1
    Boolit Buddy
    Join Date
    Feb 2010
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    Red Bluff CA
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    Forming 8 X 58R Danish Krag fron 45 X 90 Brass

    I am going to attempt to form 8 x 58R from 45 X90. Has any one done it and what are the steps to do it. What other dies will i need to get to 8 X58R. I have a set of 8 X 58R dies on the way and have brass on hand.

    Dan

  2. #2
    Boolit Master
    Join Date
    Mar 2005
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    3,584
    I have forming dies for several cases based on the .45-70 case.
    I have never formed your Krag brass but I have formed .33 Win, .38-56 Win., and 40-65 Win from 45-70 using RCBS forming dies.
    It is my estimate that your 8MM case could be formed easily with 2 or 3 intermediate forming dies before use of the 8mm DK FL die.

    These 2 or 3 dies can be FL die bodies and trim dies.
    Use caution buying FL dies to form the long 45-90 cases.
    Short closed top FL dies like those made by Lee have the small top thread that prevent the case mouth of a long case from passing through the die body. I call those closed top dies. RCBS trim dies and some other brands of FL dies have larger top threads. These threads permit the long cases to pass through permitting easier forming

    The 3 die calibers I mentioned are useful for the forming that you want to do. If you have a large assortment of FL and RCBS trim dies there are others that can be experimented with.
    They include the rounds based on belted H&H magnum brass such as the long tapered 300 H&H and the .375 H&H. Other shorter dies that have large bases include the .44-40 Win. and .38-40 Win. .
    It all depends on what you already own or what you can borrow or buy easily.
    You can explore these choices if you have a copy of Cartridges of the World.
    EDG

  3. #3
    Boolit Buddy
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    Feb 2010
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    Thanks

    The only dies that i have are 45-70, 44-40, 43 Beaumont and 8mm label that the case will fit in. 8x58R dies are on the way.

    Dan

  4. #4
    Boolit Master
    Join Date
    Mar 2005
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    Treekiller,
    I spent a lot of time and money gathering the forming dies that I own.
    One other large caliber short die body that might be useful is the .350 Rem Mag.
    If you need help with intermediate forming steps let me know. I would be glad to form some of your cases to permit you to finish size them to 8mm.
    EDG

  5. #5
    Boolit Master
    Join Date
    Nov 2012
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    New York, the empire State
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    I have Formed these using Intermediates . this is The hit or miss method. Basically you will waste more new bass than get good ones.. anew set of Forms and Trim , I checked with CH4d appox $250 . Thats if available.
    Economy wise unless you like forming . Purchase 50 new Cases and Be done with It. the final step will be to turn down the rim if necessary
    NRA Endowment Member
    International Ammunition Association
    State Rifle and Pistol Association
    ARTCA
    New York, the Empire State Where Empires were Won and Lost

  6. #6
    Boolit Master
    Join Date
    Mar 2005
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    Salpal
    I have to disagree with the assertion that you will waste a lot of brass.
    A carefully developed process takes a little time but will yield 100% (or very close to it) good cases. So says my 50 years of hand loading experience and 40 years as a manufacturing engineer. Case forming is a very easy process to perfect compared to many of the thousands of manufacturing processes I have developed for medical implants, aerospace and semiconductor components.
    EDG

  7. #7
    Boolit Buddy
    Join Date
    Feb 2010
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    Red Bluff CA
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    EDG
    PM sent
    Thank You

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BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
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HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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