300 WSM powders

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Hunter66654, Mar 1, 2004.

  1. Hunter66654

    Hunter66654 Well-Known Member

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    My new 300 wsm is finished and a friend who shoots 1000k is working up some loads for me. So for it shoots several bullets in 1/2 inch with more than one powder. I will post the rifle specs and finished loads in a few days. Basically it has a Montana Rifleman short magnum stainless action with a fluted 1/12 Kreiger barrel. I was wondering if anyone has tried H414 or H1000 with this caliber and if so what where the results. Also , would like to know if these powders are sensitive to temperature differences.
     
  2. *WyoWhisper*

    *WyoWhisper* Guest

    What Boyd said H 4350 EXT. and I have had really good results with RL 19 too.
     

  3. RuffHewn

    RuffHewn Well-Known Member

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    RL22 and H4350, with SMK 190

    H414 and W760 are highly temp sensitive as temps rise over 80 deg, aprox 2.5 fps per degree.
     
  4. TOM H

    TOM H Well-Known Member

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    I got my 300wsm less than a month ago and it has a Broughton 5r 1/12 twist barrel. I tried two powders and checked velocity. Wasn't happy with the velocity of N-165 with a 165 BT but got 3158fps wth 71gr/R-19. Before I rebarreled I tried just about all powders for the 300wsm. I got a 2 1/2" group at 300 yds with R-19. Good enought for elk and deer. I may try some 150 gr Scirocco and 760. I think you got a great rifle and lots of luck. May want to get on shortmag.com alot of good info on the wsm and others.
     
  5. Boyd Heaton

    Boyd Heaton Well-Known Member

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    H4350........
     
  6. thecowboyace

    thecowboyace Member

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    Justa' wondering, what weight bullet are you going to use most of the time?
     
  7. LDHunter

    LDHunter Well-Known Member

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    H4350 [​IMG]

    You can use a slower burning powder but will NOT likely improve accuracy or velocity and WILL likely burn your throat faster. [​IMG]

    $bob$
     
  8. Hunter66654

    Hunter66654 Well-Known Member

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    H4350 and H4831 were tried in my gun but did not do as well as IMR 7828 for accuracy.
     
  9. Boyd Heaton

    Boyd Heaton Well-Known Member

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    <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>IMR 7828 for accuracy <HR></BLOCKQUOTE>WoW...I am wondering what your velocity is.IMR 7828 is way to slow for that case.I tryed Retumbo in my wsm with the 210gr bullets.And even in a 30" barrel I did'nt burn even near all the powder in the case.
     
  10. Hunter66654

    Hunter66654 Well-Known Member

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    Boyd, the velocity with 70 grs 7828 with 175 JLK was 3090 fps.
     
  11. Hunter66654

    Hunter66654 Well-Known Member

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    Boyd, the velocity with 70 grs 7828 with 175 JLK was 3090 fps.
     
  12. BountyHunter

    BountyHunter Writers Guild

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    H4350 and MRP!!!!!

    BH
     
  13. Boyd Heaton

    Boyd Heaton Well-Known Member

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    <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Boyd, the velocity with 70 grs 7828 with 175 JLK was 3090 fps. <HR></BLOCKQUOTE>With that weight of bullet and a 24" barrel.It is impossable to burn all that slow burning powder.You would be much better off going with a faster powder.IMHO
     
  14. Hunter66654

    Hunter66654 Well-Known Member

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    Boyd, H4350 and H4831 were tried and shot the 175 JLK and 155 Lapua well when seated into the lands but accuracy fell off slightly when off the lands. The 7828 shot them the same whether on the lands or slightly off. The gun shoots 168 and 175 SMK's also just off the lands ( 1/2 inch for 3).