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Thread: 8.6x47 Lapua

  1. #1
    Terminator Products Kiwi Greg's Avatar
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    8.6x47 Lapua

    I built this in April to replace my 338BRX AR15 upper, my favorite Pig rifle upper, when it became obvious we were going to loose all the centrefire semis forever



    I wanted something light & short to replace the 20" barreled 338BRX, I had everything in stock except the barrel which is an 11.75" 1-9 338 True Flite.



    I recycled the ASE can from the BRX, I had the Rem 700 TI action, McMillan Hunter Edge stock, centre feed 10 shot double stack mags, btm metal & Timney Calvin Elite trigger.

    I chose the 6.5x47 case because I knew I needed a bigger donor case than the 6BRX to get the velocity desired & didn't want it to be as big as the 6.5 Creedmoor or 338 Federal to try to keep the noise down with such a short barrel, the ASE can as basically indestructible

    It shoots the Barnes 160TTSX pretty well at around a brisk 2600 fps



    These guys weren't that impressed with it last night, the 10 round mag pays dividends, even though I only used 5 & lost 3 bits of brass



    Very happy with the 3.5-10 x 50 VX3 I took off one of my other uppers, perfect for this rifle & its intended purpose, those little buggers are pretty tough to hit when they are close & in top gear
    Last edited by Kiwi Greg; 28-07-2019 at 12:23 PM.

  2. #2
    Member wsm junkie's Avatar
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    @Kiwi Greg any pics of the rounds?

  3. #3
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    man you build some real nice rifles love these short thumpers. nice skills wish i could do this going to try and make a compact 22lr for the grandkids out of a toz i just got .getting inspired by the cool rifles and calibres you create.

  4. #4
    Member Wingman's Avatar
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    Yes Sir...I do like that one..
    Shot a .338 whisper for years on game with those 160gr TTSX bullets at 2450fps and they did the dead well.
    Have you tried loading some 300gr subsonics for it?

  5. #5
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by wsm junkie View Post
    @Kiwi Greg any pics of the rounds?


    8.6x47 Lapua, 6 Creedmoor, 7-08

  6. #6
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by Wingman View Post
    Yes Sir...I do like that one..
    Shot a .338 whisper for years on game with those 160gr TTSX bullets at 2450fps and they did the dead well.
    Have you tried loading some 300gr subsonics for it?
    No not yet.

    I would rather use a proper expanding sub projectile, like the Lehighs in my 300 BLK & I must get them sorted in my 510Wsm

  7. #7
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    I'm looking at doing something similar and am waiting for hornady to see what they come up with in developing the 8.6 creedmoor
    They are talking silly fast twists of likely around 1-3

  8. #8
    Member Wingman's Avatar
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    1-3"?? I find that hard to believe.
    The 1-8" or 1-9" twist in the .338 will stabilize the heaviest and longest .300 grain projectiles at sub speeds. My .338 Whisper (the same cartridge that Hornady are trying to claim as their new 8.6 Creedmoor) was a trueflite 1-9" and shot very well even at 1000y. Velocity retention is amazing. Lucas used 1-8" .338 Shilen barrels for the original .338 whisper builds in NZ.
    I like the sounds of this one of Gregs built on the tougher and slightly longer 6.5x47lap brass though, Id say it will have much better usable supersonic velocities and unlike the .338 Federal could be loaded long in a short action with a variety of sub and super projectiles

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    1-3 seems like madness but It has something to do with the amount of turns the bullet does inside what it hits, more twists = more cutting

    Its all still TBC but thats coming from the Discrete ballistics guys making the subsonic expanders.

    Im real keen to see what this is like in subsonic mode, do you think you will be able to fit enough Trailboss in the case to get close to 1000fps with what you plan to run subsonically (lehigh im guessing)

    looking at the side by side bullet i could start with this one and rechamber to creedmoor at a later date if they come up with something subx-ish that "I just have to have"

    i'm also pretty keen on running a cheeper sub round like a hollow point cast, so im wondering if the silly fast twist will lead to leading of the barrel

  10. #10
    Member Micky Duck's Avatar
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    those pigs look FATTER THAN FAT..... good work on the quick shooting.nice looking rifle.

  11. #11
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by Micky Duck View Post
    those pigs look FATTER THAN FAT..... good work on the quick shooting.nice looking rifle.
    Yep, shame they are pretty small

  12. #12
    Member Micky Duck's Avatar
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    pork mince is great way to use them..... really great way.

  13. #13
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by Micky Duck View Post
    pork mince is great way to use them..... really great way.
    Yep for sure & I won't have to worry about little bits of lead & jacket through it either

  14. #14
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    Have you had a play with subs thru this rifle @Kiwi Greg?

  15. #15
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by Bill999 View Post
    Have you had a play with subs thru this rifle @Kiwi Greg?
    No not yet, I may do if I can get some dedicated expanding projectiles like Lehighs

 

 

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