Bullet weight for 6.5 long range rifle

Discussion in 'Reloading' started by 260 rem, Feb 11, 2012.

  1. 260 rem

    260 rem Member

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    I am building a long range rifle in 6.5x68 what is the best bullet weight for long range shooting light or heavy.
    I am looking at starting out with Hornady Amax 120gn or 140 grain will also be looking at Berger bullets later on.
    with the 120 gn I will be looking at 3300fps and with the 140 gn 3000fps
    so what is better heavy or light
     
  2. Gene

    Gene Well-Known Member

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    What the heck is a 6.5x68?? What twist in the barrel?
     

  3. JARHEAD1371

    JARHEAD1371 Well-Known Member

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    Heavy bullets in a given caliber will always have a higher BC, given the same type of design. The higher the BC, the less effect wind and gravity have on the bullet.
     
  4. Greyfox

    Greyfox Well-Known Member

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    I'm not familiar with the 6.5x68 but do a lot of shooting with both the 260Rem and the 6.5x284. At 3000 FPS with a 140 gr. bullet, it sounds like the cartridge is similar in capacity to a 6.5x284 and 6.5x06. Depending on what you define as long range, the 140gr is clearly the bullet of choice if you go out to 1000 yards or so. Even with the 10% increase in velocity of the 120 gr bullet, you will lose ballistic performance at long range. I have found that the 140's give excellent terminal performance on game at both short and long range. Can you give some info about the 6.5x68?
     
  5. 6.5Express

    6.5Express Well-Known Member

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    I'm with the two previous posts. If your barrel won't stabilize the 140's, you might look at the 130 berger (still a relatively high BC) or maybe even something like the 123 A Max.

    Maybe some additional information on the cartridge and barrel would help us out some.
     
  6. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    I would think you could do better than 3000fps with a 140g VLD out of that case. I can push a 140g VLD out of my 260 rem at 2950fps. The case you mentioned is longer than a 30-06 case. So I think we are looking at 6.5-06AI speeds.
     
  7. Greyfox

    Greyfox Well-Known Member

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    What load/barrel length do use to get 2960 out of a 260 Rem? I have been working on mine. Hard pressed to get much more then 2825 out of my 26" barrel.
     
  8. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    27 1/2" Brux 1-8 twist, fiocci small rifle primers, H4350, Rem brass, 140g VLD
     
  9. LRHWAL

    LRHWAL Well-Known Member

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    The 6.5x68 is similar in performance to the .264 Win Mag.

    It is a caliber that dates from the 1930's and is also known as the 6.5x68 Schuler or 8x68s. Ammo is loaded by RWS as I recall in 93gr and 127gr weights.

    As far as I know the case is the same as the 8x68s.

    It's like a European 6.5mm beltless magnum, or in fact that's what it is I suppose!

    THe case is what is used on the Boo Boo cartridges common with some F-Class shooters at one times, particularly in the UK (I think).

    7mm and .30 Boo Boo.

    I've got no personal experience with it, so this is basedo n what i've read over the years.
     
  10. OKIE2

    OKIE2 Well-Known Member

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    264 MAG = 80.7 WATER CAP.
    6.5X68 = 82.2 WATER CAP.

    6.5x68mm RWS Loads Bullet Make
    & Wt. (gr)
    Powder
    Type
    Charge
    (gr)
    Muzzle
    Vel. (fps)
    K. E.
    (ft-lbs)
    Barrel
    Len. (in)
    Owner 87 Hodgdon H-4831
    73.0M
    3700
    2645

    View
    stigma 105 Nosler Vihtavuori N-160
    67.0M
    3350
    2617
    25.5
    View
    stigma 120 Hodgdon H-4831
    68.0M
    3300
    2903

    View
    stigma 125 Nosler Vihtavuori N-160
    64.0M
    3130
    2720
    25.5
    View
    stigma 140 Hodgdon H-4831
    63.0M
    3000
    2799

    View
    stigma
     
  11. derrelw

    derrelw Well-Known Member

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    I get over 3000fps with a .260 and 26" Bartlein 5R 1:8 twist and 123gr Amax or SMK and 43gr IMR 4350 at 6000ft above sea level
     
  12. Greyfox

    Greyfox Well-Known Member

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    Thanks. I'm shooting 140 gr at 350ft elevation.....that explains the difference.
     
  13. loaders_loft

    loaders_loft Well-Known Member

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    Grey Fox, you're on the right track, 2800 to 2825 for the140 is just about perfect on the260 with 26 barrels. About 30moa at 1k, depending on the weather and bullet choice.
     
  14. deathwobble

    deathwobble Well-Known Member

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    130gr berger......h4350 in the 260