New 257 Roberts Ackley

Discussion in '6mm, 6.5mm, and .25 Cal (Not 6BR)' started by long40shot, Jul 4, 2019.

  1. long40shot

    long40shot Gold $$ Contributor

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    After much thought and wait, it's finally here. I picked up my 257 Roberts Ackley Improved last week. Now, all i need is the time to go out and run some rounds down the barrel. My dad had a standard 257 Roberts years ago and always said he regrets trading it away. So, in my thoughts of my next deer rifle, i couldn't resist. But if course i had to try the improved version! Here are the specs.

    Trued up Remington 700
    24" Krieger #4, 1-10 twist
    HS Precision sporter stock
    Plain old BDL floor plate
    Timney 510 trigger
    Barrelled action is cerakoted
    Bushnell Elite 4500 4x16
    Talley one piece rings

    [​IMG]via Imgflip Meme Generator
     
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  2. Tommie

    Tommie Gold $$ Contributor

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    You now own one of the finest meat getters on the planet. The .257AI is a superb round

    Congrats.
     
  3. riflewoman

    riflewoman Gold $$ Contributor

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    Try 50 grains 4350 with a Barnes 80 gr TTSX. Shot very well for me.
     
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  4. mike a

    mike a 6BR Rocks Gold $$ Contributor

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    Very nice.
     
  5. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    I always loved the 257rob but finally quit it between brass and bullet choices.
     
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  6. ShootDots

    ShootDots Gold $$ Contributor

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    Many years ago I had a .257A.I. I used for varmint hunting. It had a 26" 1-12 barrel. I remember my load was 55.0grs of IMR 4831. It would push 85gr Ballistic Tips at 3550f.p.s. I also had a load for Deer that used a Hornady 100gr. Interlock that moved along at 3300.. I can't remember what the load was BUT I do remember it too was IMR 4831. Both loads were incredibly accurate..
     
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  7. long40shot

    long40shot Gold $$ Contributor

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  8. long40shot

    long40shot Gold $$ Contributor

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    Im starting to look at the Ackley loads. Im wanting to test the 100 & 117grn sierras with H4350. I'm not finding much of any data for the Hodgon powder, plenty for the IMR and AA 4350. Has anyone here actually ran the H4350?

    Matt
     
  9. Ozzyblu

    Ozzyblu

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    Lower node but grouped well. 22” barrel.

     

    Attached Files:

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  10. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    How was the wind? Looks like with some wind flags you could make that one just right
     
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  11. RGRobinett

    RGRobinett Silver $$ Contributor

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    If you have it, take a good look at RL-17 - via my .257 Ack. Imps, this powder produces 3330 FPS (Oehler & Magnetospeed & 24" BBLs) with 110 Gr. bullets - this at very reasonable pressures (long brass life) and excellent precision. On targets, out to 700 Yd., RL-17 has also proven pretty temperature insensitive. First day at THE RANCH, each fall, I verify ZEROs, come-ups, and groups every 100 Yd. out to 700Yd. - regardless of weather, the RL-17 has delivered reliable performance.

    Since it became available, for the 110 Gr., and up, bullet weights, via my .257 Ackley BBLs, RL-17, has been my, "go to", powder: it delivers a whopping 230 more FPS (per Alliant's intro hype), at somewhat lower pressure than my previous, "stand by", load using H-4831.:eek::)

    Is your pic turned 90 Deg. to the right (vertical group) - if yes, and you're not getting any excessive pressure indicators, your rig may want a little more powder. RG
     
    Last edited: Jul 22, 2019
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  12. Kurz

    Kurz

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    I'm glad to see that someone else believes in Re17 as opposed to all the internet experts who think otherwise!:eek: I've been using it for years without running into problems with temp sensitivity.:D

    Thanks Randy!
     
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  13. STOMP442

    STOMP442 Gold $$ Contributor

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    Thats a nice stick in an awesome caliber.
     
  14. Larryh128

    Larryh128

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    I use it in a bunch of calibers, probably RL-17 & Benchmark are my 2 favorite powders.
     
  15. Clark

    Clark

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    I was on a quest for years to get a 1" group. In 2002 I got a 0.45" 5 shot group at 100 meters with a 257 Roberts Ackley I built on a VZ24 action with a Lothar Walther light varmint barrel.

    257 Roberts Ackley improved rimmed   10-25-2012.jpg
    That buck was so long his nose drug on the floor like an elk.

    In 2012 I built a 257 Roberts Ackley Improved rimmed on a Uberti clone of a Win 1885 falling block action with a Shilen barrel. I shot 4 deer with it in 2012.
    Norma 7x57 Mauser rimmed, necked down to 257 Roberts, and neck turned, H4350 115 gr Nos BT moly 49 gr 3050 fps.
     
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  16. david12601

    david12601 Silver $$ Contributor

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    257 is my favorite caliber.......I have 4 of the standard Roberts and 5 of the Ackley improved including an Ackley built by Parker himself.........just finished a lightweight version on a savage action bartlein bbl.....go to deer load 115 nosler ballistic tips or 115 berger using IMR 8208 XBR.....you have a fine looking piece of iron there good luck with it
     
  17. SeabeeKen

    SeabeeKen

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    Mine likes H414 with the Barnes 80 for ttsx. Dropped to with it last year and full penetration
     
  18. Kevin Taylor

    Kevin Taylor

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    Got to say, you made a great choice for a cartridge........
     
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  19. long40shot

    long40shot Gold $$ Contributor

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