270 WSM Powder

Discussion in 'Reloading' started by Denny2277, Aug 4, 2013.

  1. Denny2277

    Denny2277 Well-Known Member

    Messages:
    94
    Joined:
    Aug 7, 2010
    Hello fellow hand loading associates from around the world. I have recently gotten back into loading for the 270WSM. I had one a few years ago and got rid of it because it just wasn't that accurate. I always love the terminal performance of the round though. Well a couple of weeks ago I picked up a Savage Model 11 FCNS and now I'm back to looking for a good hunting load. My question is what would you say is a good powder for this caliber. I have some 780 Supreme, MagPro, IMR4350 and H4350. I can get some Retumbo for a local out door store. I will be using Winchester Brass, WLRM primer and Nosler 140 grain Accubonds. I would like have a powder that can get me to at least 3200fps with low temperature sensibility. Thanks for all the help.
     
  2. CogburnR

    CogburnR Well-Known Member

    Messages:
    555
    Joined:
    Dec 18, 2010
    I had a Retumbo load that worked pretty well with the 140 AB.

    All the other powders work that you listed but the only ones that might get close to 3200 with the 140 are Retumbo and Magpro.

    I'd use Retumbo, also try H1000.
     

  3. robdaniels

    robdaniels Well-Known Member

    Messages:
    132
    Joined:
    Jul 16, 2011
    I am using MagPro with good results.
    Close to 3200 with a 140 Accubond.
    And it meters great too.
     
  4. trebark

    trebark Well-Known Member

    Messages:
    3,475
    Joined:
    Jan 16, 2008
    My cousin uses H1000 in his 7wsm with good results.
     
  5. Denny2277

    Denny2277 Well-Known Member

    Messages:
    94
    Joined:
    Aug 7, 2010
    How do those powders do with changing temperatures?
     
  6. Shortmagman

    Shortmagman Well-Known Member

    Messages:
    447
    Joined:
    Feb 22, 2008
    Retumbo, H1000 and H4350 are all extreme powders, which means that they are stable in changing temperatures. I agree with CogburnR that you have the best chance of reaching 3200 ft/sec with Retumbo or Magpro. I have gotten great accuracy with IMR-4350 and good accuracy and very good velocity with RL-22.
     
  7. trebark

    trebark Well-Known Member

    Messages:
    3,475
    Joined:
    Jan 16, 2008
    H1000 is very temp stable.
     
  8. Denny2277

    Denny2277 Well-Known Member

    Messages:
    94
    Joined:
    Aug 7, 2010
    I'm going to pick up a pound of Retumbo today, anyone got any good loads for it?
     
  9. 300 ultra

    300 ultra Well-Known Member

    Messages:
    833
    Joined:
    Apr 17, 2010
    ive been doing alot of testing for 2 different 270 wsm's. Everyone talks about RL 19 and 140 accubonds. For me it didnt shoot well in either. I have found that H4831SC with 130 Barnes TTSX to shoot best. Tried 4350, RL19, RL22, Retumbo, H1000, and 7828
     
  10. logan197

    logan197 Well-Known Member

    Messages:
    111
    Joined:
    Aug 27, 2012
    I shoot 140 gr Sierra gamekings with 65gr H4831sc. Win. brass and Fed 210 primers. Velocity is at 3150 fps. Shoots .5 groups at 100 yrds and if I do my part inch groups at 500 yrds. No signs of pressure and my rifle loves the Sierra gamekings.
     
  11. Shortmagman

    Shortmagman Well-Known Member

    Messages:
    447
    Joined:
    Feb 22, 2008
    According to the Hodgdon web site 71.0 grains of Retumbo is listed as a max load, with a 140 grains bullets, and this gave 3165 ft/sec. velocity. I have worked up to this in my Winchester Model 70 and it has produced good accuracy and over 3100 ft/sec velocity.

    I used Remington brass with WLRM primers and 140 grains Accubonds to work up the load.
     
  12. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    Magpro was formulated for the WSM case, and that'd be my starting point
    gary
     
  13. Renoshooter

    Renoshooter New Member

    Messages:
    4
    Joined:
    Jul 14, 2013
    H4831SC has worked well for mine.
     
  14. Denny2277

    Denny2277 Well-Known Member

    Messages:
    94
    Joined:
    Aug 7, 2010
    Is MagPro pretty temperature stable?