6.5-300 Weatherby 9.5 Twist

Discussion in 'Big Stuff -- 6.5mm, 7mm, 30 Cal' started by pacowboy, Jun 12, 2018.

  1. pacowboy

    pacowboy

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    I bought a Remington 700 6.5-300 Weatherby from my great uncle a few years ago. It was built in the early 70's. I know a lot of you weren't even born yet. LOL I changed it around into a long range 17# benchrest shooter and rebarreld it to another caliber so I never shot it as a 6.5-300. I am no longer shooting 1K competition so I had the gun changed back to the 6.5-300. I'm not sure why my uncle chose a 1:9.5 twist but that's what I have. Does anyone have any recommendations for bullets for this combination? What powder would you recommend also?
     
  2. Evan

    Evan

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    What would you like to do with it? Hunt critters, deer, shoot paper or steel? How far are you going to shoot?

    There is so much raw speed available that your 9.5 twist will probably stabilize the 140 class bullets. Slow powders like retumbo will be your friend.
     
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  3. wboggs

    wboggs Silver $$ Contributor

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    Try some new 150 gr SMK in it. It would be worth a try. If they don't stabilize drop down to 130-140 range.
     
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  4. pacowboy

    pacowboy

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    Mostly for hunting whitetails in PA. I have a long powerline I can shoot out to 1K plus if I wanted to.
     
  5. drags

    drags Silver $$ Contributor

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    Do you know who chambered that barrel? I guessing Howard Wolfe.
    Drags
     
  6. pacowboy

    pacowboy

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    No I do not. I would say either him or Wally Hart from R. W. Hart. I can try to find out. I’m not sure how good my great uncles mind is anymore.
     
  7. mr.big

    mr.big

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    he was probably shootin 140 Nosler Partitions and H870
     
  8. wboggs

    wboggs Silver $$ Contributor

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    Yes, many of the loads back then used H870.
    It was one of the dirtiest powders I have ever seen. Thank goodness we no longer need it.
    Bill
     
  9. drags

    drags Silver $$ Contributor

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    I had a 9" twist 6.5x06 barrel and it shot the Sierra 140 MK very well also I shot the Sierra 142 MK and the Berger 130 gr bullet and they shot good. At one time the 6.5x300 WBY was considered one of the best long range deer hunting cartridges in Penna. I knew a fellow that shot the 140 gr. MK for hunting and shot many deer and a few elk with that bullet with good results, but he used a .264 Win Mag.
    Drags
     
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  10. pacowboy

    pacowboy

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    I actually still have a few pounds of H870. Courtesy of the same great uncle.
     
  11. wboggs

    wboggs Silver $$ Contributor

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    Get your cleaning gear ready if you decide to use it. It works well with the very heavy bullets and your 1-9.5 may not stabilize them
    Look at the best powders in the 28 nosler and try those.
     
  12. drags

    drags Silver $$ Contributor

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    I would try the 140 gr. smk first also the 140 gr sbt should work. I used H870 In a 7x300 wby and a 300 wby both barrels were 30 " long with good results, granted its dirty but is no problem to clean and usually gives top velocity. May not be a top choice today but is still a good powder to use.
    Drafs
     

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