What powder for 140SSTs in a 6.5x284?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by schumi, Apr 14, 2014.

  1. schumi

    schumi New Member

    Messages:
    3
    Joined:
    May 4, 2011
    I've been trying to shoot 140gr SSTs in my 6.5x284 and can't get a good group. I've been using IMR 4350. Its the same powder I use in my competition 6.5x284s, but under a 142SMK. All my 6.5s love it. But I've tried different charges of 4350 under the SSTs and can't get a group under 2". Has anyone had better luck with a different powder?

    I'm using:
    Winchester 284 necked down to 6.5
    Federal GM210 primers
    27" Lilja 1:8 twist
     
  2. biggdawg

    biggdawg Well-Known Member

    Messages:
    92
    Joined:
    Sep 7, 2012
    I have had good luck with rl22 and 4831sc in mine with good results with very little work up.
     
  3. schumi

    schumi New Member

    Messages:
    3
    Joined:
    May 4, 2011
    I just picked up some H4831SC. Whenever this weather breaks I'll try some out.
     
  4. schumi

    schumi New Member

    Messages:
    3
    Joined:
    May 4, 2011
    Well.... after much research, 51.7gr of 4831sc shot very well. But, 50.8gr of RL22 shot just a touch better, with all bullet holes touching. Both were producing 2960fps, which seems to be the node this barrel likes. BUT...... I found another node at 3100fps that was awesome. But with sticky bolt lift and cratering primers, it's just too hot to shoot. Thanks for the help in narrowing the powders down biggdawg.
     
  5. biggdawg

    biggdawg Well-Known Member

    Messages:
    92
    Joined:
    Sep 7, 2012

    your welcome glad you got it figure out and i could help.