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Thread: Lee 309120 in a M1 Carbine

  1. #1
    Boolit Master
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    Lee 309120 in a M1 Carbine

    Looking for suggestions for a load.
    Been using the Ideal mould, but wanted to try a gas check boolet.

  2. #2
    Boolit Master
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    The Lee C309-120-R should work just fine. You can try one for only $20.

    https://www.midwayusa.com/product/23...dius-gas-check

  3. #3
    Boolit Master
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    I would try Accurate #9. Depending on your alloy your bullet weight should fall in this range.

    http://www.accuratepowder.com/wp-con...2016_Web-1.pdf
    110 (L) LC RN
    115 (L) LYMAN #311359
    130 (L) LYMAN #311410

  4. #4
    Boolit Master
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    I’ve used 90gr SWC, 93gr RN, 100gr RN, 113gr FNGC, and 120gr RNGC.
    The non-GC bullets are powder coated.
    All have shot equal or better than jacketed bullets which tend to be undersized.

    My favorite cast bullet powder is #2400. Acc#9 closely matches performance of #2400.
    The economy of the 93gr RN thrown from my 6-cavity molds make them my preferred load. 11.4gr of #2400 operates the action and throws the cases over my shoulder behind me making recovery of brass easy.

  5. #5
    Boolit Master 15meter's Avatar
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    Never used the Lee mold but I have used a bunch of 2400 with the Saeco 254 and have been pleased. My daughter's favorite round.

  6. #6
    Boolit Master
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    Got the mould already.
    Looking for a load.
    Ideal is an old Lyman pointy nose plain base 115g boolet. Forget the number.
    Shoots good, but wanted to try a gas check boolet.
    Going to try 11.0 to 12.0 of 2400. and 12.5 to 13.5 of W296.
    I might try some 11.0 to 12.0 of #9 or Blue dot.

  7. #7
    Boolit Master
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    I use that bullet with 12 grn of 2400 in my carbines (7 of them) and they all like it

  8. #8
    Boolit Master
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    Tried it at the range today. Unexpected results.
    Click image for larger version. 

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    50yds off the bench. 5 shots
    This is the best it ever shot.
    309id 2400 11.0gr
    Also tried 11.5 and 12.0 with 2400, and 11.0 and 12.0 with AA#9.
    Shot well, but not as good.

  9. #9
    Boolit Master Texas by God's Avatar
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    I'd say Eureka and use that load.

    Sent from my SAMSUNG-SM-G930A using Tapatalk

  10. #10
    Boolit Master
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    I may have to drop my load down to 11grn and try that

  11. #11
    Boolit Master
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    Hope I just didn't get lucky.
    Only loaded 10 rounds of each for testing.
    50yds and 100yds.
    We'll see if it was just a fluke or not this weekend.

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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