Powder for 270 WSM

Discussion in 'Reloading' started by JB Short, Feb 5, 2011.

  1. JB Short

    JB Short Member

    Messages:
    12
    Joined:
    Dec 28, 2010
    Hey all, I've been using Rel. 19 with sierra and Barnes bullets, I don't have a chrono so can't say what actual vel. is. My question is are Ramshot magnum, H1000, H4831 powders that I should be using to get better load density and velocity, along with more temp stable. I want to try Hornady 130 SST so if I'm switching bullets maybe time to try a different powder, any thoughts?

    JB
     
  2. Booney

    Booney Well-Known Member

    Messages:
    552
    Joined:
    Jul 18, 2008
    I would try 4831 first and then maybe ramshot hunter I think h1000 and ramshot mag might be a little slow for that round. let us know what you go with and how it works.
     

  3. icelk

    icelk Well-Known Member

    Messages:
    79
    Joined:
    Dec 31, 2009
    Reloader 17, Win760
     
  4. JB Short

    JB Short Member

    Messages:
    12
    Joined:
    Dec 28, 2010
    Thanks, the 4831 is one of the easiest powders for me to get ahold of so that will be my next buy. I'll keep posted.

    JB
     
  5. CogburnR

    CogburnR Well-Known Member

    Messages:
    555
    Joined:
    Dec 18, 2010
    H4831 for being temp stable but it won't be the fastest by 120fps+. Most of my hunting is done with 4831.

    Magpro is probably the fastest powder but drops off a bit when really cold. 75g will make a 130g go 3350+.
     
  6. bigngreen

    bigngreen Well-Known Member

    Messages:
    5,840
    Joined:
    Nov 24, 2008
    I shoot a lot of Retumbo out of mine, I got better speed out of Magpro but could not get accuracy. H1000 was also great but I couldn't get my hands on any more when doing development. With 130 gr bullets and smaller I used R17 with good success but with the heavier bullets got pressure signs way to early. I think a guy really should try something in the 4350 speed range and the Retumbo range to see what range it's liking, H4831 would maybe be a nice one but haven't tried it.
     
  7. out front

    out front Active Member

    Messages:
    35
    Joined:
    Apr 17, 2009
    FWIW

    I've run 130 ABs and 130 SSTs with both H4831 and H4350.

    The 4831 gave me slightly better groups but 4350 edged it out on velocity.

    Either one should be good. I played with Reloader 22 for a bit because I had some around but it did not give me the groups/velocity I was looking for.
     
  8. trebark

    trebark Well-Known Member

    Messages:
    3,475
    Joined:
    Jan 16, 2008
    Although 4831 is temp stable, RL17 would probably give better velocities.

    Here's a great resource for choosing powders...

    Burn Rate
     
  9. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    try some Magpro from Accurate Powders. It was designed for the WSM case
    gary
     
  10. eddybo

    eddybo Well-Known Member

    Messages:
    1,651
    Joined:
    Jan 5, 2007
    VV560 VV560 VV560 Vihtavouri 560 beats everything I have ever tried in WSMs
     
  11. TORCHRIDER

    TORCHRIDER Well-Known Member

    Messages:
    468
    Joined:
    Oct 14, 2010
    Magpro is amazing in my Tikka T3 in .270WSM. Single digit SD's and incredible accuracy and velocity. gun)

    Have never tried it in super cold weather so can't comment on that aspect as was brought up on a previous post.
     
  12. bigngreen

    bigngreen Well-Known Member

    Messages:
    5,840
    Joined:
    Nov 24, 2008
    That's one brand I haven't tried yet. It's not available locally so I'll keep an eye out for some in my travels!!