6mm TCU

Discussion in '6BR, 6BR Improved & Wildcats' started by Jaybo, Sep 12, 2018.

  1. Jaybo

    Jaybo Silver $$ Contributor

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    Was wondering what a good powder would be for the 6mm TCU. I'm going to be running 80 to a 100 gr bullets with a 20" 1-9 Twist barrel. Any info would be great about this round .
     
  2. JSH

    JSH

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    H335
     
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  3. BRGUY

    BRGUY

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    I shoot a 20" 6mm TCU with a 1-9" twist rate, and I use H-322, H-335 and H-4895.

    Accuracy at 100 yards averages 1/4" or less on a good day, to 1/2" on a bad day.

    The only primer I use is Remington 7 1/2.

    I use 204 Ruger brass instead of 223 brass and actually have better accuracy and longer case life with it, over what I get with 223 brass.
     
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  4. centershot

    centershot Silver $$ Contributor

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    I have a 25 inch, 9 twist Kreiger Barrel on a Savage action. I started out liking TAC powder but now use LT 32. Remington 71/2 primers and LC brass that is "cleaned up" at the neck to get rid of the high spots. I shoot 80 grain Nosler Varmint bullets. With Berger bullets, it shoots under 1/2". BTW, that Nosler load gets 3,000 fps. Excellent, efficient cartridge.

    Also shoot a .223 AI and consider it a good prairie dog combo.
     
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  5. Jaybo

    Jaybo Silver $$ Contributor

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    Thanks for all the information guys keep it coming. I want to know as much as I can know about this round I've already read a lot. that's what made me want to build this gun. What kind of velocities were y'all getting with this round
     
  6. GrocMax

    GrocMax

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    For 2.260" max OAL 6TCU and 2.500" max OAL 6TCU you're in two different powder speed areas esp. with the 80g plus bullets. What is your max magazine length?

    I can get 3300fps out of 70g varmageddon with good case life, but its a long tube.
     
  7. JEFFPPC

    JEFFPPC

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    if you shoot light bullets like 58 to 70 gr, fill it up with Win 748. I had a 14" Contender with a 12x Leu that was unreal with this combo. It took a real good rifle to out group it at 100yd.
     
  8. Spook

    Spook Captured too late to be fully domesticated.

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    bl-c2, varget ,VVN-135,VVN-140 . Bergers 88 gr FB, Bergers 87VLD hunting and their 95 gr VLD are all good in 6TCU. Noslers 95gr BT doesnt suck either.

    Enforcer, VVN 110 and 115 Bergers are really nice subsonic loads.
     
  9. 5spd

    5spd

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    H335, Xterminator, aa2015 wont do you wrong at all.
     
  10. Kermit in Va.

    Kermit in Va.

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    Don't have a tcu but have a 6x223 and it likes CFE 223
    and the 70 grs Sierras.


    Kermit
     
  11. fredo

    fredo Silver $$ Contributor

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    OP, your 1:9 might limit how heavy you can go, and might not work at all with a 100gr. Don't sweat it though, 87-95 is plenty heavy for your TCU to push on, especially from a 20" barrel...

    I have a (nearly identical) 6x45AI, 22" 1:8. 87Vmax for vermin, 80TTSX for deer. Both shoot lights out with H322 & H335. Currently loading the '335 with the 80s & seeing 2920fps in cold winter air from that 22" Krieger!

    We sure read a lot on how many fans the dandy .223AI has, and for very good reason! Kinda strikes me as odd that more shooters don't take a quick step to neck it up, cuz they're really missing out on a super little cartridge! You'll soon find out, for yourself...

    Have fun!!
     
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  12. Jaybo

    Jaybo Silver $$ Contributor

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    Thanks for all the info guys it's definitely going to help me decide on which way to go with this round.
     
  13. swd

    swd Yep that's me Gold $$ Contributor

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    Hodgdon Ball C(2) is another great powder. I get excellent speed and accuracy out of a straight 6x45. 80gr Sierra Varminters at 3100.
     
  14. Jaybo

    Jaybo Silver $$ Contributor

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    Have any y'all used to CCI BR4 or 400 small primers in the 6 mm TCU
     
  15. BRGUY

    BRGUY

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    I have used the CCI BR4 with 55 to 70 gr. Bullets with great success!
     
  16. GrocMax

    GrocMax

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    400's for moderate pressure fireforming, 205, 450, 7 1/2, or BR4 for full loads.
     
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  17. Jaybo

    Jaybo Silver $$ Contributor

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    Have any of y'all hunting whitetail deer with this round. I'm thinking about using the 90 grain tipped gameking.
     
  18. swd

    swd Yep that's me Gold $$ Contributor

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    I've shot a few blacktail with mine. 95 Partitions work great. Full penetration on a broad side shot. Nickle size entry and quarter size exit. BIG hole in the heart and lungs.
     
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  19. Jaybo

    Jaybo Silver $$ Contributor

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    I do like a Nosler partition they work every time
     
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  20. Kermit in Va.

    Kermit in Va.

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    Not a tcu but I have shot a few with my 6x223 with 80 Rem. bullets and think I'll change. Don't think I'm pushing them fast enough to mushroom much. It kills but always passes through.
    Not too big a hole coming out. Probably change for this year to something that will.


    Kermit
     
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