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Thread: 6,5 creedmoor load - target results advice wanted

  1. #1
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    6,5 creedmoor load - target results advice wanted

    Hi All,

    On the second round of OCW load testing for my howa 1500 6.5CM - Looking for advice and interpretation of the results below

    All rounds shot from bipod with rear bag by average shooter who is still learning (me) so there are a couple I know I pulled and have excluded those from results

    Prep
    130 Sierra tgk
    H4350
    Cases full sized - shoulder bumped 3 thou
    All bullets seated at the same depth +/- 1 thou
    25 thou off the lands

    Previous round of testing was from 41.6-44 in 0.3 gr increments showing good results from 42.4 up

    loads tested
    42.4 gr best group
    42.6 gr reasonably tight but a bit laddered
    42.8 gr shit show of a group
    43.0 gr
    43.2 gr tight bolt lift

    My thoughts are stick with 42.4 then start on seating depth - What do you all think?
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  2. #2
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    Did you shoot the initial loads through a chrony

    Sent from my CPH2145 using Tapatalk

  3. #3
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    no chrony yet - tested one today but didnt have it set up right

  4. #4
    Member Micky Duck's Avatar
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    inexperienced shooter..the 42.4 looks good and SHOULD be slightly easier on shooter...... try holding forend with off hand behind the bipod.
    it may or may not make your groups better.
    A330driver and liam_s like this.
    75/15/10 black powder matters

  5. #5
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    42.4 looks good play with seating depth and try a front bag if you have one, Id also try say 5 rounds at 42.5 next time your out as well.
    liam_s likes this.
    may be sarcastic may be a bad joke

  6. #6
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    Do your next round of targets off a front and rear bag, you may find those fliers disappear.

    You can make a good rest out of some old pants and rice or sand, cut the legs off the pants and sew them shut with sand or rice inside.

    I would try 42.4 42.6 and 43 with the sandbags.

  7. #7
    Member fernleaf's Avatar
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    Is this for a Hunting or Target Rifle?

    0.6 MoA is pretty effing good for a factory mass produced rifle - with or without a Heavy Barrel.

    Any of those groups - with the exception of 42.8 grns - are more than acceptable for most hunting you'd do in NZ, and very acceptable for any Precision/Target shooting. I stopped doing any development once I could consistently shoot 0.6 MoA groups with my 6.5CM Target Rifle - any further effort would yield limited benefit...
    tetawa and A330driver like this.
    In longrange riflery, trajectory is the pure science part. Gravity is a constant for our purposes.
    Wind is in the art department.
    Light is pure fucking voodoo.

  8. #8
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    thanks all for the advice @Micky Duck thanks for the advice I'll give it a crack @blip yeah, I'm pretty happy with the 42.4 and will try the 42.4 with a range of seating depths off a front bag and see how it goes @Rated M for Magnum agree the 42.6 and 43 probably also deserve another round @fernleaf rifle is an off the shelf howa 1500 22" sporter barrel primarily hunting rifle although yet to shoot anything myself as I'm new but also keen to stretch it out at the Malvern Rifle club to improve my skills

    Will report in with results when I'm back in town long enough to load some more

  9. #9
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    thanks all for the advice
    @Micky Duck thanks for the advice I'll give it a crack

    @blip yeah, I'm pretty happy with the 42.4 and will try the 42.4 with a range of seating depths off a front bag and see how it goes
    @Rated M for Magnum agree the 42.6 and 43 probably also deserve another round
    @fernleaf rifle is an off the shelf howa 1500 22" sporter barrel primarily hunting rifle although yet to shoot anything myself as I'm new but also keen to stretch it out at the Malvern Rifle club to improve my skills

    Will report in with results when I'm back in town long enough to load some more

  10. #10
    Member Micky Duck's Avatar
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    I guess what some of us are trying to say is this...... dont waste heap of components trying to sort out the bit that goes bang..untill you have sorted the nut behind the butt....... good technique is a learned thing and makes a HEAP of difference.
    personally I hate shooting paper with a passion..... necessary evil to sight in.... the easier yo ucan make it on yourself the better
    getting your position rock solid with relaxed muscles helps..a firm hold while on bullseye,close eyes for 10 seconds..open eyes ,are yo ustill on target??? if not reposition untill rifle stays there...your hands are holding rifle firmly but the sandbags/bipod/daybag/rolled up swannie is taking the weight of it if you doing it right....muscling rifle onto target definately isnt ideal.
    75/15/10 black powder matters

  11. #11
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    Howa hogue stocks no good off a bipod either. Too flimsy at the front so shoot off a front bag or a rolled up jumper

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    Plus if you shoot in off a rest don't fit a bi-pod in the field, use your day pack.

  13. #13
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    Quote Originally Posted by liam_s View Post
    Hi All,

    On the second round of OCW load testing for my howa 1500 6.5CM - Looking for advice and interpretation of the results below

    All rounds shot from bipod with rear bag by average shooter who is still learning (me) so there are a couple I know I pulled and have excluded those from results

    Prep
    130 Sierra tgk
    H4350
    Cases full sized - shoulder bumped 3 thou
    All bullets seated at the same depth +/- 1 thou
    25 thou off the lands

    Previous round of testing was from 41.6-44 in 0.3 gr increments showing good results from 42.4 up

    loads tested
    42.4 gr best group
    42.6 gr reasonably tight but a bit laddered
    42.8 gr shit show of a group
    43.0 gr
    43.2 gr tight bolt lift

    My thoughts are stick with 42.4 then start on seating depth - What do you all think?
    Attachment 238286
    My thoughts are to load up a box or two of ammo and go hunting. Save any further load development until winter and early spring. Your 42.4 grain load is close to max in the Nosler data and over max for a Nosler projectile in the Hodgdon data. Your Sierra projectiles are a little softer but not that much. Get that chronograph sorted before you next test session. Your groups are great considering your equipment. It ant broke so don't try to fix it,
    Regards Grandpamac.

  14. #14
    Member Micky Duck's Avatar
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    hogue stock issue is dead easy to solve with a sharp pocket knife and 2 minutes of time.....its only the tiny bit of rubber at very end of barrel channel that can physically touch barrel its all of 2mm deep and wide....
    superdiver and liam_s like this.
    75/15/10 black powder matters

  15. #15
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    Greetings,
    Scratching around on the interweb and found some Sierra data for the 130 grain TMK in the Creedmoor. Max was 42.9 grains of H4350 (AR2209) for 2,800 fps in a 24" barrel. So your 42.4 grain load is just under max and should produce around 2,725 fps so should be fine for both hunting and target shooting.
    Regards Grandpamac.
    Micky Duck and liam_s like this.

 

 

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