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Thread: 6mm BR in a hunting rifle for deer.

  1. #1
    Caretaker Wildman's Avatar
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    6mm BR in a hunting rifle for deer.

    If one wanted to do such a thing are there any pitfalls one should be aware of? Anyone done such a thing? I am guessing that if you push a 6mm projectile at similar speeds as a 243 it well have the same effect

    I have a Sako 75 in 243 that I intend on burning out at which point it will need a new barrel...
    7mmsaum likes this.

  2. #2
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    The feeding is the issue. It might work on your sako?
    northdude likes this.

  3. #3
    Lovin Facebook for hunters kiwijames's Avatar
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    Quote Originally Posted by Friwi View Post
    The feeding is the issue. It might work on your sako?
    Yep Friwi is onto it. A T3 will feed em OK but the staggered? 75 will probably be a pain. I went exactly the opposite way from a 6BR to a 243.
    You will never drive the 6BR as fast as a 243 either. You can get way better performance from there BR but you will hit the wall or need a 30" tube.
    Powder and barrels are cheap.
    @LJP is the man to ask but I'm pretty sure he went 7mm-08 after running a sweet 6BR.

  4. #4
    Member 6MMBR's Avatar
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    issues feeding,

    mine pushes a 107gr at 3120 now
    6BR has 55% less recoil then a 308. Factory Ammo That Shoots .42 moa at 300m deer dont care tho.

    not that that shit matters.

    it will kill a deer with pinpoint accuracy.
    if your loading your own its on small primers and stuff all powder..so cheep cheep...
    I would do it again hands down
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  5. #5
    Not just an internet expert... The Claw's Avatar
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    Quote Originally Posted by Wildman View Post
    If one wanted to do such a thing are there any pitfalls one should be aware of? Anyone done such a thing? I am guessing that if you push a 6mm projectile at similar speeds as a 243 it well have the same effect

    I have a Sako 75 in 243 that I intend on burning out at which point it will need a new barrel...
    How about a 6x47 Lapua?

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  6. #6
    Caretaker Wildman's Avatar
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    I guess I could get some dummy rounds and test feeding prior to re-barrel. Failing that I hear 22-250 mags work so could try sourcing one of them...

    I'm not really looking for a 243, rather something different I guess. I have enough deer guns so I'm more interested in an accurate smaller caliber...

    No 6x47 Lapua because brass costs heaps and I cant be bothered with the fire forming thing. Not that I am guessing it is much in this case, still its something to go wrong...

  7. #7
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by Wildman View Post
    I guess I could get some dummy rounds and test feeding prior to re-barrel. Failing that I hear 22-250 mags work so could try sourcing one of them...

    I'm not really looking for a 243, rather something different I guess. I have enough deer guns so I'm more interested in an accurate smaller calibre...

    No 6x47 Lapua because brass costs heaps and I cant be bothered with the fire forming thing. Not that I am guessing it is much in this case, still its something to go wrong...
    Have you considered a fast twist 22-243 ?

    My 1-7 twist one is incredible, 90 Bergers at 31-3200, accurate enough for bunnies past 800, no recoil.

    Barrel life isn't fantastic, but barrels are consumables

  8. #8
    Lovin Facebook for hunters kiwijames's Avatar
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    Quote Originally Posted by 6MMBR View Post
    issues feeding,

    mine pushes a 107gr at 3120 now
    6BR has 55% less recoil then a 308. Factory Ammo That Shoots .42 moa at 300m deer dont care tho.

    not that that shit matters.

    it will kill a deer with pinpoint accuracy.
    if your loading your own its on small primers and stuff all powder..so cheep cheep...
    I would do it again hands down
    That is insane velocity from a 6BR. You are on the heels of my 243AI and better than most 6x47L. I doubt a Sako 75 action for a hunting rifle will ever get close to 2900fps as a BR running 105g+ pills.
    I also doubt the 107SMK is a good choice pill for deer.

  9. #9
    Caretaker Wildman's Avatar
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    Quote Originally Posted by Kiwi Greg View Post
    Have you considered a fast twist 22-243 ?

    My 1-7 twist one is incredible, 90 Bergers at 31-3200, accurate enough for bunnies past 800, no recoil.

    Barrel life isn't fantastic, but barrels are consumables
    Not really what I am after.

  10. #10
    Caretaker Wildman's Avatar
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    Quote Originally Posted by kiwijames View Post
    That is insane velocity from a 6BR. You are on the heels of my 243AI and better than most 6x47L. I doubt a Sako 75 action for a hunting rifle will ever get close to 2900fps as a BR running 105g+ pills.
    I also doubt the 107SMK is a good choice pill for deer.
    Yeah Quickload keeps me on the ground. Not saying Mr @6MMBR doesn't get those speeds, but with a 20" barrel at standard pressures you should be able to get 2800fps with a 105gr Amax... That is heaps.

  11. #11
    Member 6MMBR's Avatar
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    not sure why you dont think the match bullet wont kill a deer.
    if you can shoot a 7mm group at 200 who gives a shit.

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  12. #12
    Member 6MMBR's Avatar
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    30gr of varget with a 107 will give you about 2850 from a 20 inch barrel..
    you can also hot it up a lot more if you wish.
    Wildman likes this.

  13. #13
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    if its of any help at all a tikka 595 action and 22-250 magazine cycles 6br flawlessly if you wanted to get a platform for a hunting repeater chambered in 6br
    7mmsaum likes this.

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    i run 6mmbr resonably hot in a 29inch lilja barrel and im getting 2930 with lapua 105s. thats running 30.5 gr 2208

  15. #15
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    Quote Originally Posted by Wildman View Post
    ..
    No 6x47 Lapua because brass costs heaps and I cant be bothered with the fire forming thing...
    There's no fire-forming involved. Simple neck down job and you're GTT
    Have to agree there's no point unless you already have one and want to use the same gear. They're certainly up to the job power- and accuracy-wise

 

 

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