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Thread: 6.5 Creedmore

  1. #31
    Unobtanium gunDriller's Avatar
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    Re: 6.5 Creedmore

    Quote Originally Posted by steyr_m View Post
    .308 is good because you usually want to stick to military rounds during SHTF for availability. I think .243 is a necked-down .308, so brass would be highly available. I don't know much about the Creedmore, but looking at building a 6.5x47 Lapua soon. 6.5 mm seems to be the sweet-spot for long range calibres,
    Shooting at longer distances basically means being a rocket scientist - we're talking Mach 3+.

    So ballistic coefficient becomes important. The flat-butt bullets I like to shoot at 200 yards ... maybe I got lucky.


    The best bullet I've found at 6.5 is the Hornady I think I put a link to - 123 grain. BC = .510

    At 308, you have to go up to about 180 grain to get a comparable BC.


    However, there's another factor besides BC. Sometimes the slightly wider opening of the bigger brass allows its geometry to perform better.

    You get zero reward for using the smaller diameter caliber.

    The 270 WSM maxes out at about 3000 ft pounds.

    The 300 WSM maxes out at 3500 foot pounds.

    Top speed for both ? 3250 fps.

    http://www.midsouthshooterssupply.co...sion-20-Rounds

    http://www.midsouthshooterssupply.co...oint-20-Rounds

    There is something about the slightly larger opening that helps get a lot better performance, from the same internal volume of the brass.


    I don't know if I have the budget to work through all this.

    I also don't know if I'll ever shoot at a distance (greater than 200 yards) where BC really matters.

    Fun to talk about though - helps me understand guns better !
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  2. #32
    Unobtanium mick silver's Avatar
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    Re: 6.5 Creedmore

    its nice to know you can if you ever need too , not everyone can take a long shot ... I also don't know if I'll ever shoot at a distance (greater than 200 yards) where BC really matters.
    “Now remember, when things look bad and it looks like you’re not gonna make it, then you gotta get mean, mad-dog mean. ‘Cause if you lose your head and you give up then you neither live nor win. That’s just the way it is.” ~ Outlaw Josey Wales…

    STOP F*CKING WITH US.

  3. #33
    Iridium monty's Avatar
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    Re: 6.5 Creedmore

    Quote Originally Posted by mick silver View Post
    its nice to know you can if you ever need too , not everyone can take a long shot ... I also don't know if I'll ever shoot at a distance (greater than 200 yards) where BC really matters.

    In Nevada long shots are fairly common. My brother has killed deer and his desert bighorn sheep at 600 yards ome shot clean kills. I am not that good a shot. I like the 100 to 200 yard kills.
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  4. #34
    Militant Wing of the Salvation Army midnight rambler's Avatar
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    Re: 6.5 Creedmore

    6.5 mm seems to be the sweet-spot for long range calibres
    The Swiss figured that out a long time ago.
    "It is the mark of an educated mind to be able to entertain a thought without accepting it." --Aristotle

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  5. #35
    Unobtanium gunDriller's Avatar
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    Re: 6.5 Creedmore

    so let's go shopping for 6.5 Creedmoor

    https://www.google.com/search?q=site....com+creedmoor
    https://www.google.com/search?q=site....com+creedmoor

    The longer barrel is a little more expensive
    http://www.tombstonetactical.com/cat...ountain-stock/


    http://www.tombstonetactical.com/cat...-9x40mm-scope/
    $513 with a 22" barrel and a good scope

    http://www.impactguns.com/ruger-mkii...676179800.aspx
    28 inch barrel, $800

    "The 6.5 Creedmoor resulted from a conversation in 2007 at Camp Perry between Hornady Senior Ballistician Dave Emary and Dennis DeMille, general manager of Creedmoor Sports and 2005 NRA National High Power Champion, about the ideal match cartridge. DeMille suggested a list of characteristics, including match-grade accuracy, a high-ballistic coefficient (BC) bullet, low recoil, good barrel and brass life, moderate chamber pressure, wide availability, affordable and a 2.800-inch overall length for feeding from short-action magazines. Emary took DeMille's list back to Hornady and used it to begin development of a new cartridge.

    Emary selected 6.5 mm for the new round because of the available selection of 0.264-inch-diameter match projectiles, all of which offer high ballistic coefficients and excellent accuracy." By Stanton Wormley, Jr., American Rifleman Magazine March 2009
    Retired Director Morris Waxler says the FDA did not do their job for 15 years - and is not now.

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  6. #36
    Unobtanium mick silver's Avatar
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    “Now remember, when things look bad and it looks like you’re not gonna make it, then you gotta get mean, mad-dog mean. ‘Cause if you lose your head and you give up then you neither live nor win. That’s just the way it is.” ~ Outlaw Josey Wales…

    STOP F*CKING WITH US.

  7. #37
    Unobtanium mick silver's Avatar
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    “Now remember, when things look bad and it looks like you’re not gonna make it, then you gotta get mean, mad-dog mean. ‘Cause if you lose your head and you give up then you neither live nor win. That’s just the way it is.” ~ Outlaw Josey Wales…

    STOP F*CKING WITH US.

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