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Thread: Mold for 300 Blackout

  1. #1
    Boolit Bub
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    Mold for 300 Blackout

    I'm looking for a 150gr Pointed design that I can use in the 300 Blackout. I would think that a 2 groove would be fine. GC of course. I have an NOE 311...can't remember the rest of the numbers that is pointed but 198 gr. Does anyone know who has a mold similar to what I want?

  2. #2
    Boolit Master
    Jailer's Avatar
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    Lee 312-155-2R. Works great in my 300 blk.

    15.3gr of H110 has been my go to load for this boolit for best accuracy and runs right around 1820 FPS or so. Seating depth will depend on your chamber.

  3. #3
    Boolit Master

    nhrifle's Avatar
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    The boolit Jailer mentioned works great in my Blackout. H110 seems to be a good powder, but give LilGun a try.

  4. #4
    Boolit Master

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    My current favorite boolit in the 300 is also the Lee 155, feeds perfectly and shoots well. I use it with around 15-15.5gr of H110/W296.

  5. #5
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    bruce drake's Avatar
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    Ok, #3 to support the LEE 155. I also tried a FN 150gr LEE design which did not feed in my 20" AR which has the M4 Feed ramps in the barrel. The LEE 155 Spitzer just feeds fine enough that I stopped looking for an equal 150gr load. For my lighter cast loads, the Lyman 311359-120gr is fun as well.

    Bruce
    I Cast my Boolits, Therefore I am Happy.
    Bona Fide member of the Jeff Brown Hunt Club

  6. #6
    Boolit Bub
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    Thanks, Everyone!!!I appreciate the info. I will order one right away!

  7. #7
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    scb's Avatar
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    311414 if you can find one. Doesn't shoot as well as 311365 in my gun but it's not bad.
    "Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety".
    Benjamin Franklin

  8. #8
    Boolit Master

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    I haven't found a design that my 300 really dislikes.
    NRA Endowment Member

    I don't own an assault weapon. I own a counter-assault weapon.

  9. #9
    How about the RCBS 82022? 130 gr.

  10. #10
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    Baja_Traveler's Avatar
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    Quote Originally Posted by scb View Post
    311414 if you can find one. Doesn't shoot as well as 311365 in my gun but it's not bad.
    So you are saying you shoot the 311365 in your blackout? If so, I guess I dont need another mould as I really like that design.

    I'll be building one up later this year (when things approach normal again), so I'm looking at these threads to plan ahead...

  11. #11
    Boolit Master
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    Yes the 311365 is my best shooting cast boolit out of my 300 Whisper.

    10 shot group - 100 yds
    Click image for larger version. 

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    I have a 311247 but can't seem to get them to fly straight. (note they appear to be tipping)
    Click image for larger version. 

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    And the groups ain't nothin' to write home about.

    These are out a 16" ssk 1-8 twist upper.
    "Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety".
    Benjamin Franklin

  12. #12
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    SCB, what alloy are you using in your 311365 and 311247? Gas checked? Haven't tried my 311365 yet, but the 311247 looks promising so far over subsonic charges of AA1680. These were plain base air cooled 50/50, sized .310 with carnauba red out of my 1 in 8" upper with carbine gas. These shot groups less than half the size of factory hornady 208 A-max ammo. (Don't hate. - It was given to me!).

    Gonna have to try the 311365.

  13. #13
    Boolit Master
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    Quote Originally Posted by crawfobj View Post
    SCB, what alloy are you using in your 311365 and 311247?
    Don't really know. I'm using up some "lead" that was given to me by an old guy who had sold of his casting stuff. It's hard. He said it had "some" Linotype in it. If you drop a boolit on the cement floor it "rings". And if you drop one it's just as likely as not to break. The 311365 were gas checked. the 311247's were plain based.
    "Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety".
    Benjamin Franklin

  14. #14
    So what about the RCBS 82022...130gr. Any body try it.... would it work or would one have have to size it down?

  15. #15
    Boolit Master hicard's Avatar
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    The RCBS 130 works fine in my 300 blk.
    This country has gone to hell!

  16. #16
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    Jailer, moonie, What alloy mix are you using for the Lee 155 mold ?

    Thanks
    Smoke

  17. #17
    Boolit Master

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    Quote Originally Posted by Smoke4320 View Post
    Jailer, moonie, What alloy mix are you using for the Lee 155 mold ?

    Thanks
    Smoke
    Straight COWW, nothing added, Gator gas checks, sized .309, some stick in the chamber of my upper if I size to .311, sons upper eats either size just fine.

  18. #18
    Boolit Master
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    50/50 WW/range scrap air cooled. Hornady checked and sized to .310 with MML for lube.

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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