Other powder than H1000 for 7 LRM

Discussion in 'Reloading' started by Rick Richard, Jul 21, 2015.

  1. Rick Richard

    Rick Richard Well-Known Member

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    Anyone have any success with other powder than H1000 for 7 LRM? Also, please share your load recipe and performance data.

    Thanks in advance for any replies.

    Rick
     
  2. gillettehunter

    gillettehunter Well-Known Member

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    I don't have that caliber, but I'd look at Retumbo. Most rifles that use H-1000 will do well with a few more grains of Retumbo. It burns a little slower.
     
  3. Pa Grizz

    Pa Grizz Well-Known Member

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    I second the Retumbo. I use it in my 7mm rem mag
     
  4. firstcoueswas80

    firstcoueswas80 Well-Known Member

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    With out looking at my notes, I think,70-71 grains of Retumbo was getting me 3050 with the 180 hybrid.
     
  5. AZShooter

    AZShooter Well-Known Member

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    I have the slightly larger case, a 7mm/375 without the shoulder moved back like the LRM. I tried H-1000, US 869, Retumbo and RL-33 with 168 Berger hybrids. Didn't bother with the 180s because the rem 7 mag takeoff I rechambered is a 1 in 9.25 twist. The rifle really came alive with higher velocities and good accuracy with RL-33. With a 26" barrel and 86 gr of RL-33 I am getting 3268 fps.

    Obviously your LRM will use less RL-33. I would start with a charge weight a few grains below the top load for Retumbo and work up from there. This approach has worked for a 6mm-284, 257 Weatherby, 300 RUM as well. Alliant may have made RL-33 but their load data is very limited.
     
  6. JeffVN

    JeffVN Well-Known Member

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    Try Retumbo, RL-25 and RL-33. There is a new IMR powder but I can't remember the number that burns nearly identical to H1000.

    JeffVN
     
  7. JakeGraves

    JakeGraves Well-Known Member

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    Ramshot Magnum might be worth a shot. My LRM shoots lights out with 71.6 of H1000 and 180 Hybrids so I am not messing with it anymore. I am getting just a touch of smoke on the necks so I am already on the slow end with H1000.
     
  8. mbeebout

    mbeebout Well-Known Member

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    h1000 68.2 with 162 amax toughing the lands also I use 70 gr retumbo and 168 berger vld toughing lands both loads work great in my 7mmgun)
     
  9. RustyRick

    RustyRick Well-Known Member

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    4831 always bested in my old 7mmRM. Starting a new one today.