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Thread: 6.5 x 55 and 4831

  1. #1
    Boolit Master Thumbcocker's Avatar
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    6.5 x 55 and 4831

    I am wanting to try something. I have 6.5 boolits cast up that weigh 159+ grains ready to load. They are sized. 266 for use in a Ruger 77.

    Wanting to break 2000 fps with a fast twist I feel that a slow powder is the way to go. I have data for 160 grain j word boolits using 4831.

    I'm thinking of rounding up the starting j word load and trying it with my boolits. Am I asking for trouble here? Logically it makes sense but I know that powder and pressures don't always behave logically.

    Any input appreciated.

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  2. #2
    Boolit Master
    oldblinddog's Avatar
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    You should be in safe territory. Start with the starting load and look for an accuracy node. If you have any other slower powders they may prove better suited to what you want to do.
    USMC 6638

  3. #3
    Boolit Master Thumbcocker's Avatar
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    Tried it. It sucked. Lesson learned.
    Paper targets aren't your friends. They won't lie for you and they don't care if your feelings get hurt.

  4. #4
    Boolit Grand Master Nobade's Avatar
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    4831 is still on the fast side. WC872 is more like it.
    I was not able to break 2000 fps with any kind of accuracy in my '96 Mauser until I started paper patching the bullets, now equaling the military load ballistics is easy with the PP bullets and some REALLY slow powder.

  5. #5
    Boolit Master
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    I would think a J load would be too hot for a boolet....at least 10 gr less for r 30-06 with 4895 so same proportion here? Dunno

  6. #6
    Boolit Grand Master Nobade's Avatar
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    Quote Originally Posted by Martin Luber View Post
    I would think a J load would be too hot for a boolet....at least 10 gr less for r 30-06 with 4895 so same proportion here? Dunno
    Not if they are paper patched. Trying that without the patch was kind of comical, those long skinny boolets were breaking in half from the very fast twist of the '96. Apparently the nose started rotating before the base could catch up. It took a while before I figured out why I was getting two strikes for every shot and they weren't very close together. That's using the "cruise missile" 170 grain Lee bullet.

  7. #7
    Boolit Master Thumbcocker's Avatar
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    I do have some 8700 around here somewhere.

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  8. #8
    Boolit Grand Master


    Larry Gibson's Avatar
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    Starting loads for 4831 with jacketed bullets in the 6.5x55 are still too fast for cast bullets in the fast twists of the Swede. You might want to back it down a bit and use a dacron filler if the load density is under 80%.
    Larry Gibson

    “Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
    ― Nikola Tesla

  9. #9
    Boolit Buddy garrisonjoe's Avatar
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    1600 FPS is about the sweet spot for cast bullets in the Swede. 25 BNH bullets (water hardened) and Rx7 or 5744 lets me shoot about 1.5 MOA at 100 and 200 yards. With 160 (+/-) grain boolits.

    4831 way too slow IMHO. garrisonjoe

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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
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
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