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Thread: 6.5 Creedmoor Loads for 1:8 Twist?

  1. #1
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    6.5 Creedmoor Loads for 1:8 Twist?

    Hey guys. What are some of your go to loads for 130-140ish grain loads?

    Is everyone using 2209? Has anyone had luck with 2208? I have a heap of 2208...
    Hawkes Bay Rifle Club - http://www.sporty.co.nz/hbrc

  2. #2
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    I'm on the 2209 train. Seemed a good bet for starters and it turned out that my rifle likes 41.5 grains with the 140 ELD-M, CCI 450 primer and Lapua brass.

    It shoots so well I just haven't needed to look elsewhere! I've played with 2206 with 100 grainers, more work to be done there.

    I am a bit curious about other powders for a faster load purely for hunting though.

    All the reading I have done says that 2208 or Varget has good accuracy potential but isn't the best for velocity with the heavier 6.5 stuff.

  3. #3
    Member Cordite's Avatar
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    For added inspiration you could also look up 6.5 Japanese loads as the rifles have 1:9 twist to cope with long 139 grain projectiles.
    Guns don't kill people - drivers do.

    The Hedgehog Preservation Society

  4. #4
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    Steelisreal - out of interest, why did you stick at 41.5 gr and what velocity did you get from that?

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    @Flyblown - I loaded up 3 rounds each from 38 to 42 grains in 0.5 grain increments a few weeks back when my rifle was brand new. All the loads grouped well, but the 41.5 shot in to one large hole. I figured that apart from tweaking seating depth that it was pretty good so I should just stop right there.

    I haven't shot it over a chronograph as yet - that will have to wait for some friendly sort to let me fire a few rounds over/through it, or a couple of paydays time!

  6. #6
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    Have been having good success with the 135 bergers and 147 eld-m with reloader 26. getting great accuracy at good velocity, 2850 for the 135s and 2800 for the 147s. lapua brass 22 inch barrel

  7. #7
    Member 300_BLK's Avatar
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    Quote Originally Posted by Kurt View Post
    Hey guys. What are some of your go to loads for 130-140ish grain loads?

    Is everyone using 2209? Has anyone had luck with 2208? I have a heap of 2208...
    barrel length?
    Warm Barrels!

  8. #8
    Not just an internet expert... The Claw's Avatar
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    I'm using Norma URP in mine with 147gr ELD-M's. Just under 2,700fps and very low SD and ES with great accuracy. 24" barrel.

    Sent from my SM-N950F using Tapatalk
    If it's not a first round hit you need to practice more

  9. #9
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    Quote Originally Posted by Steelisreal View Post
    @Flyblown - I loaded up 3 rounds each from 38 to 42 grains in 0.5 grain increments a few weeks back when my rifle was brand new. All the loads grouped well, but the 41.5 shot in to one large hole. I figured that apart from tweaking seating depth that it was pretty good so I should just stop right there.

    I haven't shot it over a chronograph as yet - that will have to wait for some friendly sort to let me fire a few rounds over/through it, or a couple of paydays time!
    Thanks mate. Will be very interested to see what your speeds are.

    With my Creedmoor I ended up in a silly situation of being driven upwards in the AR2209 powder weights by a chrono that is under reading by 80-100fps. No pressure signs at any stage and the brass is fine after 4 firings now, and man it is a killing machine.

    I wanted a steady 2700fps from my 143gr ELD-X and I passed the powder weight for that speed about 80-90fps low according to the chrono. So I carried on, having spent some time on the Creedmoor forum looking at what others were doing and asking questions. Ended up at 2720fps, three 15-20mm groups at 100m from 42.4gr AR2209, which is 0.9gr over the Hornady book max. A lot of the issues I was reading about identifed a velocity deficit in H4350 (AR2209), blokes just not getting what they wanted compared to the book scale, so that kind of fooled me a bit. Also, this from Johnny’s Reloading Bench which is always helpful...

    https://youtu.be/r0gQCmnYmHU

    Anyway I went out back and drop tested it and its like nah, somethings wrong, groups at 300m were well high compared to Strelock and Hornady ballistics. Calculated velocity based on average drop was 2800fps exactly. Set this as default, went out and shot bang on target at 300m and 500m on paper. Hmm, so much for the chrono. First pest control trip dropped 22 goats between 286 and 625m. One miss in 23 shots, I’ll take that.

    Next reload of this Lapua small primer brass I’m gonna drop the load to book max and see what we get accuracy wise, over a new chrono (good blokes at Broncos will sort it out). Want to prolong brass life, it ain’t cheap.

    Interestingly at the start of the ladder (about 2550fps) I got a genuine one hole 3-shot group, 10mm at 100m, the best group I’ve ever had in any rifle ever. So to see if it was a fluke I made up 6 more rounds at that weight and did it again, twice... thought holy shit maybe I should just stop right there.

  10. #10
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    I'm on the 2209 train. Seemed a good bet for starters and it turned out that my rifle likes 41.5 grains with the 140 ELD-M, CCI 450 primer and Lapua brass.

    Me too

    Be aware that Lapua small rifle primer brass isnt going to show a lot of pressure signs as per the norm. I believe it lets people pump up the volume way above the book maximum, without the usuall tell tale signs.
    Steelisreal and Flyblown like this.

  11. #11
    Member Flyblown's Avatar
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    Quote Originally Posted by johnd View Post
    Be aware that Lapua small rifle primer brass isnt going to show a lot of pressure signs as per the norm. I believe it lets people pump up the volume way above the book maximum, without the usuall tell tale signs.
    @johnd Would be good to know where that is discussed please.

  12. #12
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    Havent read it that I recall, its just an impression I have got. From reading different articles in other forums .... nothing concrete.
    One of the reasons that people wanted SP brass such as Lapua and Starline was so that it would have a longer life, and that means that it should not respond to high pressure by enlarging pockets.
    Enlarged primer pockets is therefore a sign of high pressure, that isnt going to show up in SP brass.
    Another benefit of SP brass is that it will now also have a thicker base so it wont expand as much and this will mask what would normally be stiff bolt lift.
    As the primer has a smaller comparative area it is also less likely to show things like gas leak and primer flow.

    All of these signs of excessive pressure will still happen, just at a higher level than what the reloader is used to when using "normal" brass

    This is all pure conjecture on my part. Make of it what you will.
    Steelisreal and Flyblown like this.

  13. #13
    Member 300_BLK's Avatar
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    Check out rifleshooter.com heaps of info there, guys are getting really good speed in 20" barrels with 142/143 gr and RL17
    Warm Barrels!

  14. #14
    Member Flyblown's Avatar
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    Quote Originally Posted by 300_BLK View Post
    Check out rifleshooter.com heaps of info there, guys are getting really good speed in 20" barrels with 142/143 gr and RL17
    Yeah I’ve been keeping tabs on that too, the RL17 is getting good support.. Really don’t want to have to change powder, 2209 covers .243 and 6.5CM, but might have to.

  15. #15
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    140g ELD Match, 41.5gns 2209, Hornady brass trimmed to 1.915, Federal 210M primer, 2.815 COAL
    1/2 MOA load
    johnd likes this.

 

 

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