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6mm at 4000fps

Discussion in 'Rifle Country' started by glockky, Jan 3, 2012.

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  1. glockky

    glockky Member

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    I have been thinking of getting a wildcat round to play with. I was hoping to find something in 6mm that would make 4000 fps. So far i havent found anything is there something i am missing?

    I have a model 700 now in 243winchester and they say u can get the 55gr bullets up to 4000 but i have never been able to get them to shoot accurate. Not sure why i just would like to have a 4000 fps 6mm, would a different twist rate barrel on my 243 fix my problem.
     
  2. HOOfan_1

    HOOfan_1 Member

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    6mm/244 Remington will do it with a 55 Gr. So will a .243 Winchester Super Short Magnum.

    Neither of those is wildcat though. The 6mm/244 Remington is a 7x57 or 8x57 if you prefer Mauser case necked down to 6mm

    BTW...the 244 Remington came out with a slower twist rate for lighter bullets, it didn't sell, so they brought it back as the 6mm with a faster twist for heavier bullets
     
  3. LoonWulf

    LoonWulf Member

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    .244 remington, .243wssm, 6-06, 6-.284, .240wby should all do 4k with the right loads and a long good quality barrel.
     
  4. MachIVshooter

    MachIVshooter Member

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    6mm-06 AI will do it with ease using 65 grainers. I'm building one, but not for that purpose. I plan to run 100-107 gr, at ~3,600.
     
  5. viking499

    viking499 Member

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    What does a 6BR normally run?
     
  6. Sam1911

    Sam1911 Moderator

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    What happens at 4,000 fps?
     
  7. MachIVshooter

    MachIVshooter Member

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    Magic! :D

    I only run my .17 rem over 4,000, though (4,300). Even the .220 swift gets 55's at 3,950.
     
  8. Damon555

    Damon555 Member

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    That 243 should do just fine. You might need to tweak your loads a little bit but I bet you can get acceptable accuracy.
     
  9. glockky

    glockky Member

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    I might give it another try. I just want a 4000fps rifle and i love the 6mm and already have a lot of bullets to reload for it.
     
  10. taliv

    taliv Moderator

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    check out the 6 Crusader... pretty fast even with 115 DTACs ...not as fast as you want, but still accurate
     
  11. 303tom

    303tom member

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    I can average a little over 3900 fps with a 75 grain bullet using a .25-06 from a model 700.
     
  12. LoonWulf

    LoonWulf Member

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    a really long tube might get the .243 over 4k with 55s. Ive seen some loads that quick from pressure barrels, but fastest i can drive 65s is in the 3650-3700 range out of my 22.
     
  13. Gunnerboy

    Gunnerboy Member

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    A 6x54r wildcat could do that if i ever get around to building one
     
  14. HOOfan_1

    HOOfan_1 Member

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    barrels get burned up
     
  15. Sam1911

    Sam1911 Moderator

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    Ahhh... just curious. I was wondering if it was like the "1,000 yd." thing -- an arbitrary goal based solely on our fondness for round numbers -- or if there was a phenomenon of performance that was obtained when exceeding that specific velocity (at the muzzle, at least).
     
  16. HOOfan_1

    HOOfan_1 Member

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    I was just kidding, although the .243 is already considered a little overbore. I don't think I would want to be shooting several boxes of ammo in an hour on a P-Dog town with a 6mm pushing 55 gr. @ 4000fps.

    I remember reading an article in one of the gun rags about the muzzle velocity race in the late 60's/early 70's and how the .17 Remington came out and all the gun writers were drooling over it's sheer speed.
     
  17. Sam1911

    Sam1911 Moderator

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    Kidding? Naaah, there are some real burners out there. .243 probably not the worst.

    I've got a pal with a 6mm-'06 Improved wildcat something or other. That one's not expected to live a long life. But I'll bet 4,000 fps isn't too hard to hit with it.
     
  18. MachIVshooter

    MachIVshooter Member

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    And somehow it still became a niche cartridge with a small following. I love it, though.

    The .17 Rem and .204 Ruger don't have the barrel burning problem of the larger super-fast rounds, though. They go over 4k with a relatively small charge.

    It's not, but that's also not really the point of the 6mm-06AI, IMO. It's like the Ultra mags, meant to push heavy-for-caliber bullets at very respectable velocities. 55's in a 6mm-06AI would be like running 125's in a .300 RUM.
     
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