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Thread: 6mm JDJ #2

  1. 05-04-2013, 03:34 PM #1
    Coonazz
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    6mm JDJ #2

    Hello all!
    Need some help in finding some recent load data for my 6mm JDJ #2 Contender. Have been browsing the web for the last couple of days to no avail. The only data that I have for her is from Handloader #197. Any help would be greatly appreciated.
    Thanks in advance,
    John
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  2. 05-05-2013, 03:07 PM #2
    Kraschenbirn
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    Is your "6MM JDJ #2" formed from .307 Win. cases? If so, what you've got is, essentially, a rimmed .243 Win. While I've never shot/reloaded the 6mm version, I did shoot a 7mm JDJ #2 for IHMSA silhouettes and found the cartridge extremely accurate. Only downsides that I recall were short brass life and difficulty finding .307 Win cases. (The only rifle ever chambered for the .307 was the long-out-of-production Win. 94 XTR 'Big Bore' and Winchester only produces short runs of the brass on a 'seasonal' basis.)

    For load data, I'd recommend contacting SSK Industries ( http://sskindustries.com/ ) to see what they can provide. When I checked, I noticed that they no longer catalogue any of the old 'JDJ #2' rounds but they still might be willing to provide info.

    FWIW: When I received my 7mm JDJ #2, the load data that came with it was a Xerox copy of someone's (Ol' J.D. himself, maybe?) handwritten range notes and chronograph numbers. Brass life, using the provided STARTING LOADS, was only 3 or 4 reloads and cases needed to be trimmed every other resizing. Backing the 'recommended' loads off another 10% and working back up 1/2 grain at a time improved both brass life and accuracy while dropping MV only 100-120 fps.

    Bill
    Last edited by Kraschenbirn; 05-05-2013 at 03:21 PM.
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  3. 05-06-2013, 11:44 PM #3
    Coonazz
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    6 JDJ is formed from 225 Win. Simple neck up and fire form.
    Going to SSK was my first stop...their data is older than what I have! Was hoping to find data a little more current for the new powders and bullets available now as compared to when I purchased this barrel in 95 or 96.
    Thanks for your input,
    John
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  4. 05-08-2013, 12:14 AM #4
    leadman
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    Might ask on Speciality Pistols website.
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  5. 05-12-2013, 02:40 PM #5
    TCTex
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    If I remember right, the 6.5 JDJ is off the 225 and the 6.5 JDJ#2 is based of the 307.

    I think your advice of going over Handgunhunt or specialty pistols and asking questions was a good one!

    Send an email to JDJ. He has done very well responding to my questions.
    Last edited by TCTex; 05-13-2013 at 10:44 PM. Reason: finished fragment sentence
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  6. 05-12-2013, 11:11 PM #6
    Coonazz
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    Thanks for the advice. Will give it a try.
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Abbreviations used in Reloading

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
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check