Re-chambering Completed!!

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by 6.5x61Super, Jan 7, 2011.

  1. 6.5x61Super

    6.5x61Super Well-Known Member

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    ...6.5x61Super...



    [video]http://www.youtube.com/watch?v=7yGfnQivrxw[/video]
     

  2. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    So I cant watch the vid not your fault just only have so much band width a month. So what it this thing? At first I though oh necked down 30-06 but I can see the belt so what is it?
     

  3. 6.5x61Super

    6.5x61Super Well-Known Member

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    Parent cartridge is the 7x61 Sharpe & Hart..later revised to the 7x61Super.

    It predated the 7mm Remington Mag by almost 10 years.

    My gunsmith is a huge fan of the cartridge.....I had Dave at PT&G make me a custom reamer for the 6.5 chambering.

    Quickloads is showing 2,935 fps with a 139 gr. Lapua Scenar and 55.2 grs. of H4831SC with a chamber pressure of ONLY 46,822 psi......

    ...my chronograph will have to confirm!!


    a MAXIMUM LOAD of 59.5 grs. shows 3,142 fps with a chamber pressure of 58,444 psi. BUT it is in between the OBT nodes....



     
    Last edited: Jan 7, 2011
  4. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    Thank you. I learned something. Keep us posted
     
  5. shortgrass

    shortgrass Well-Known Member

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    That ought'a cut a throat out in no time flat! Keep them wildcats comin', barrel makers and us gunsmiths love 'um!
     
  6. 6.5x61Super

    6.5x61Super Well-Known Member

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    ..on the surface you would think so....from my understanding..powder burn rate and more importantly CHAMBER PRESSURE are the two most significant factors in predicting barrel wear...

    here is a screenshot from what I hope to expect:

    1,817 rounds!!

    ..course how fast [rate of fire] those rounds are sent down the barrel will matter!!

    [​IMG]
     
  7. shortgrass

    shortgrass Well-Known Member

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    In the part of the country I live in when you mention the 6.5x.284 the next sound you hear will be someone saying "it's a barrel burner". With loads in the neighborhood of 2900fps. life expectancy is about 1200rds. You'll never get that 1817rds. out of that overbore beast, no matter what the program says. Just too far over bore. I recently bore scoped a .260 that has a known round count of 3025. She's 'wobbly' half way to the muzzle. Good luck!
     
  8. shortgrass

    shortgrass Well-Known Member

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    I just couldn't resist, compared chamber prints of .264 Win. Mag. & 6.5x61 Super. They appear to have similar capacity and the loading manual I looked at showed the .264 with about the same charge weight with same bullet weights. I guess it boils down to what one would consider "exceptable accuracy" when it comes to barrel life. The 1200 rds. I mentioned earlier for the 6.5x284 refers to the tactical 'match' rifles I've worked with. Those guys screw a new tube on every year!