6.5 Creedmore vs 7mm'08 ?

Discussion in 'Big Stuff -- 6.5mm, 7mm, 30 Cal' started by littletoes, Feb 7, 2015.

  1. littletoes

    littletoes

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    While having a discussion with a friend, who has recently purchased a rifle chambered in 6.5 C. I was explaining to him, that although its roughly ignored, the 7mm'08 beats it ballistically on all levels.

    Honest opinions please!
     
  2. BCoates

    BCoates

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    Please post some velocities that you have achieved with your 7-08. I have a Savage 6.5 Creedmoor with 24" barrel. Below are my tuned loads with this gun (not max loads).

    140 AMAX - G1 =.585, G7 = .299, Velocity = 2777 fps
    142 SMK - G1 = .595, G7 = .301, Velocity = 2744 fps
    130 Berger Hunting VLD - G1 = .552, G7 = .282, Velocity = 2934 fps
     
  3. stacy

    stacy 2 TIMOTHY 2 VERUS 15 Silver $$ Contributor

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    130GR VLD'S OUT OR MY 6.5 CREEDMOOR GETS ABOUT 3045FPS OUT OF THE 28'' BARREL 8 TWIST U CAN DO ANY ANYTHING 7MM-08 CAN DO I HAVE BOTH!!!!!!!!!!!1
     
  4. jsthntn247

    jsthntn247 Silver $$ Contributor

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    Ballistically they are almost identical. The 7-08 shoots bigger bullets and therefore will have more energy at extended range.
     
  5. swampthang

    swampthang

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    i shoot a creedmoor in ibs light gun and although i have always been a fan of 30 cal the 6.5 just cant be beat imo.
    better ballistics, and with a 30 deg shoulder it burns powder more efficiently , with less brass stretch .
    its just built to shoot 1000yards and does so very very well.
    i routinely shoot sub 5 in groups for score with several 3.1-3.7 in 5 shot groups in competition. the only thing i can complain about is decent brass- only 2 choices, hornady and nosler. the nosler is weight sorted which is a plus and the hornady has really thin necks. i beg for the day lapua will make brass but dont see it happening. with my 140 berger vld, seated .020 off the lands in a bartlein 5r behind 42.7 gr of h-4350 lit by a fed 210m primer yeilds very low es and consistant velocities around 2800 fps- and i dont push it very hard at all. i have won several matches against the best in the country with this combo and if better brass was available i think it would help ME considerably.
    nothing at all wrong with a 7/08 but i think day in day out a 6.5 will out perform it.
     
  6. littletoes

    littletoes

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    Thanks guys!

    I really appreciate the information. I figured the way I worded it would bring some discussion! ;)
     
  7. swampthang

    swampthang

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    if you go with a creedmoor i really think youll be more than pleased.
    never seen one built right that would shoot with the best . and another thing i forgot to mention is barrell life. i have just over 1800 rounds down m ine and still shoots sub moa at 1k. havent even set the barrell back either. throat growth measured at 1200 rounds was .008, which i think is great. good luck.
     
  8. DonnyJ

    DonnyJ Silver $$ Contributor

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    I'm considering building a 7mm-08.
    What would be your recommendation on bullets and barrel combinations, length, twist ect...
    Thanks
    Donny
     
  9. 22BRGUY

    22BRGUY Silver $$ Contributor

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    Why not a straight .284 Win?
     
  10. DonnyJ

    DonnyJ Silver $$ Contributor

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    DANG!!!
    Just when I thought I knew what I wanted. ;D
     
  11. Raptor

    Raptor

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    Go 284 if you have a long action. You will NOT be sorry. They are a hammer!!! I have shot mine out to a mile. I had it set back at 2300rds...
     
  12. FJIM

    FJIM

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    Wrong..the weight of the bullet is almost irrelevant. It's the ballistic coefficient and sectional density that does the work..
    The 7/08 while a fine cartridge can not match the ballistic coefficient and sectional density of a 6.5 mm bullet in a weight that is light enough to push to a good velocity.

    I use 308 Lapua palma brass reformed in my 6.5 creedmore 24" barrel..shooting the 140 VLD at 2,950 FPS.
    to match that bullet you would need to go to the 168 VLD or 162 A-max in the 7 bore. I do not think the 7/08 has enough powder capacity to push either of those bullets over 2,700 FPS...although either one of those bullets at 2,700 FPS is not bad medicine . It would seem the .284 in a long action would be a much better choice or just go all out to the 7 mag as I do when trying to out perform those slippery 6.5's..IMO
     
  13. Laurie

    Laurie

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    FJIM, interesting that you've got the 140 up to 2,950 with Palma brass. Good MV! I have a raft of 6.5s and sevens and am just starting a load work-up with the 7-08 with the 162 A-Max and 168s in a 31-inch barrel throated out for the 168 Berger VLD.

    Before I started this project, I ran all the numbers and came to the same conclusion as you. All other things being equal the 260 (throated long) and 6.5 Creedmoor have a higher MV potential than the 7-08, around 50-100 fps for the 140 VLD v the 168 7mm VLD, and with nearly identical BCs, the 6.5s have an external ballistics advantage.

    I'll see now if that's how things work out in practice. I've yet to chronograph any of my initial -08 loads, but it seems a sweet number and grouping potential looks good. If it shoots really well, I'll accept a bit more windage effect. (I use a 284 for 800-1,000 anyway, so the 7-08 is a short / mid-range number.)
     
  14. BCoates

    BCoates

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    The 7-08 sounds good in theory, especially if you shoot a 284 or 7WSM/RSAUM because they shoot the same caliber bullets. Use the 7-08 for mid-range and the 284 or 7WSM/RSAUM for long range.

    In practice you don't saving anything because you will not be using the same bullets in the 7-08 (162-168 gr) as you do in the big 7's (175-180 gr). So for a mid-range gun you might as well pick the best option, and for F-Open, the 6 Dasher or one of the 6.5's (260 rem, 260 AI, 6.5 Creedmoor, or 6.5x47 L) is the best balance of ballistics, accuracy, and recoil. Why choose the added recoil of 168 gr bullets in a 7-08 if it doesn't give you an edge?
     
  15. DonnyJ

    DonnyJ Silver $$ Contributor

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    How would a .243 win compare with 6.5C and 7mm-08?
    Looking at the 7mm page,( on this site) the drift/ drop compairison chart includes it.
    It looks to hold it's own against the 7mm.

    Thoughts?
     
  16. BCoates

    BCoates

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    The 243 shooting Berger 105 Hybrids should beat the 7mm-08 with Berger 168s. The 6.5 Creedmoor will be better than the 243 or between the 243 and 7-08 depending on bullet choice and barrel length.
     
  17. Raptor

    Raptor

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    Guys, I have shot out a lot of barrels doing long range shooting and have them all from the 6MMs to the 30s and the one constant, if you want to shoot long range, is go with the heavy bullets. If you shoot in any kind of wind you just can't beat the heavy bullets down range.

    I have settled on the 7MMs because I think it gives the best bang for the buck. The 30s tend to pound you with recoil and the 6MMs are just to light for me in the wind. I know they look good on paper but when you shoot them side by side the heavy bullets will hit on target more times than the lighter bullets will.

    I know the dashers hold all kinds of records but when you get to 1000 on out you just can't compete with the heavier high BCs of the 7MM bullets. Just my opinion on what "I" have found living and shooting in a windy state...
     
  18. BCoates

    BCoates

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    Raptor - I'm not disagreeing with you, but if you choose to shoot 7mm bullets, you need a cartridge with enough capacity to push the velocity up to 2850+ fps to be competitive. The 7mm-08 cannot do that.
     
  19. littletoes

    littletoes

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    When you move up in diameter, doesn't the larger diameter win? With bc's being comparable....
     
  20. Santee116

    Santee116

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    I can get 2750 pretty dang easy with my 7-08 and RL-17 with the 162 Amax (with absolutely no pressure signs in my rifle.)

    This is coming from a hunting set-up with a 21.5" Bartlein.

    I imagine if you set it up, specifically for the 162's and ran a 26" barrel you could probably get to 2800-2850 pretty easily with this combo.

    However, based on recoil alone, I would definitely go with a 6mm or 6.5mm for competitions.
     

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