Staball 6.5 for 7mm-08

Discussion in 'Big Stuff--7mm, 30 Cal, .338+' started by CTK, Feb 17, 2020.

  1. CTK

    CTK Silver $$ Contributor

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    Anyone tried this yet? Amazing speed numbers from Hogdon website.
     
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  2. DHuffman

    DHuffman Gold $$ Contributor

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  3. CTK

    CTK Silver $$ Contributor

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  4. Bluetip

    Bluetip

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    I'm in process of working up a few loads in three weights, 140, 150, 168.
    Have a promising load, or node in the middle of the range for the 168. I'm at 46.3 now, can go to 48, I believe. I'm told it really gets sensitive when you approach your max, and velocities jump, with small increases. Tried mag primers, on first outing, and standards. I believe standards will be just fine. I actually had flattened primers, Magnum, with moderate load. Same charge, standard primer, not flattened, and more accurate.
    Interesting stuff, treading lightly so far. Time will tell, weather providing too!
     
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  5. Bluetip

    Bluetip

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    Correction on the168, smk powder charge, its actually 47.4, max.
    The150 is 48 ish.
    Supposedly. I can get 2800 or so, 162ELD. We'll see!
     
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  6. std7mag

    std7mag

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    I'm doubting it...

    Let us know.
     
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  7. DHuffman

    DHuffman Gold $$ Contributor

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    With 48g I can easily get 2800+ with a 7-08 AI with a 184 hybrid but it is hard on the brass. 2770 is fine in the cooler winter weather but may still be too much when it warms up.

    Edit: this is an AI chamber with a 28" barrel not a straight 7-08 22" barreled sporter.
     
    Last edited: Feb 21, 2020
  8. 500yards

    500yards

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    I did some shooting with StaBALL 6.5 in the 7mm-08. I loaded 120 TTSX, 120 ballistic tip, 140 fusion and 150 AccuBond. All loads were with Hornady brass, and wlr primer. The rifle was a stainless ruger American 22” barrel. I did the usual treatment with working up loads and worked up to max looking for signs of pressure and looking for accuracy. I’ll say that this rifle is a bit picky with what it likes. I have a ruger American compact that shoots everything well but the one I shot today is a different animal.
    Listed max with a 120gr bullet is 53gr
    120 ballistic tip 2.80 col. 53gr got 3,037 FPS with no sign of pressure. Best accuracy at 52gr @ 2,934 3 shots at .27”! Need to look further into that load.
    120 TTSX 2.78 col. 53gr got 3,052 FPS. With no pressure sign. Best accuracy was at 53gr. 5 shots @ .98”
    Max for 140 is 48.5 but max for 139 is 51 and 145 is also 51. So I chose to try loading up to 51gr
    140 fusion 2.8 col. 51 gr got 2,843 FPS. With no signs of pressure. Best accuracy was at 51gr @ .64” 5 shot group! Need to look further into this load.
    Max for 150 bullets is lasted at 49.2 for 150 ttsx and 48.5 for 150 SIE HPBT. I tried loading up to 48.5 for a 150 AccuBond.
    150 Accubond 2.80 col. I started seeing signs of pressure early and at 47.5gr @ 2,713 I was getting ejector marks and a stiff bolt lift so I didn’t go any further. Accuracy was terrible across all loads.

    I know I used different components and had a 22” barrel but I came up pretty short of Winchester’s velocities. Although the velocity was less than expected some of the loads showed promising accuracy. I’ll have to reshoot the 120 ballistic tip and 140 fusion. Those are really good groups for this rifle. The 120 ttsx at .98” is also good but the ttsx is the one bullet that almost always shoots well in this rifle so .98 is pretty normal.
     
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  9. std7mag

    std7mag

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    28" barrel?
     
  10. DHuffman

    DHuffman Gold $$ Contributor

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    Yes 28" Broughton 8.5 twist on a Panda Action bench gun.
     
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  11. std7mag

    std7mag

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    So take off 100fps +/-, to equal 24" barrel.
    And another 50fps +/- to equal a standard 22" hunting barrel that the OP has.
    Ya get my drift..

    On the other foot, sounds like a really nice rifle! Got pics?
     
  12. DHuffman

    DHuffman Gold $$ Contributor

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    Yeah I missed the 22" barrel part. Completely different animal!
     

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  13. std7mag

    std7mag

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    That's a sweet rifle ya got there, Mr. Huffman!!
    But i'm a sucker for carbon fibre!

    Not much give to that buttpad! ;)
     
  14. DHuffman

    DHuffman Gold $$ Contributor

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    The carbon fiber is a dip and the but plate is fine even without the radial brake. Thanks
     
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