H4350 in 257 Roberts Imp?

Discussion in 'Varminter & Hunting Forum' started by long40shot, Jan 22, 2019.

  1. long40shot

    long40shot Gold $$ Contributor

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    Is anyone using H4350 in your 257 Roberts Improved? I'm looking for some data for when my rifle is finished.

    Thanks,
    Matt
     
  2. Drop Port

    Drop Port

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    Yes what weight bullet?
     
  3. riflewoman

    riflewoman Gold $$ Contributor

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    Shortly...
     
  4. Preacher

    Preacher Gold $$ Contributor

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    If the 257 Roberts don't like H-4350 get a new barrel...
    85 to 110 grain bullets love that stuff.....
     
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  5. dedogs

    dedogs Gold $$ Contributor

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    You might also consider giving RL 16 a try. Said to be more temp. stable and a bit faster with same weight charges. dedogs
     
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  6. long40shot

    long40shot Gold $$ Contributor

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    First I'm going to try 100grn Gamekings. Then maybe the 117s. I might try the 110 Noslers, not sure on that one though. I'm hoping that this barrel will like H4350, as i have about 12 pounds sitting around.

    Thank you,
    Matt
     
  7. long40shot

    long40shot Gold $$ Contributor

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    Would you share any pet loads?
     
  8. Ozzyblu

    Ozzyblu

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    49.0 H4350, Barnes 100gr TTSX, 3020fps, 21” barrel. Slow node but shoots great.
     
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  9. long40shot

    long40shot Gold $$ Contributor

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    How does that triple shock perform on game?
     
  10. Barlow

    Barlow Silver $$ Contributor

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    I went to RL17 on mine. Barlow
     
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  11. Ozzyblu

    Ozzyblu

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    I am a Barnes fan for game bullets so a little bias. For me they have performed great especially in .25cal.
     
  12. RGRobinett

    RGRobinett Silver $$ Contributor

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    RL-17, current .257 Ack. Imp. barrel (PacNor #3 contour, 1:10", 5-groove, 24") & 110 Gr. BT, delivers 3330 FPS, along with excellent precision, and long case life. Though both are good choices, I haven't used H-4350, or H-4831 since the RL-17 was introduced. If you do not have RL-17, you'll enjoy burning out a barrel using up the H-4350: once you're hooked on the 257 Ack. Imp., ten you'll want RL-17! :eek:;)RG
     
    Last edited: Jan 25, 2019
  13. Barlow

    Barlow Silver $$ Contributor

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    Mine is a 9 twist 25" Rock Creek and am getting 3613 from 87gr Hornady sp's and iirc 3270 with the 100gr. I know I can get more, but more is not needed. Barlow
     
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  14. long40shot

    long40shot Gold $$ Contributor

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    Are the 120s to heavy to fire form with or would they be ok?
     
  15. Boyd L.

    Boyd L. Witty comment under development Gold $$ Contributor

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    No such thing.
     
  16. long40shot

    long40shot Gold $$ Contributor

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    What?
     
  17. Boyd L.

    Boyd L. Witty comment under development Gold $$ Contributor

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    No such thing as 120 grain bullets being too heavy to fireform with.
     
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