Performance change with current Retumbo

Discussion in 'Reloading' started by Greyfox, Feb 22, 2012.

  1. Greyfox

    Greyfox Well-Known Member

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    Two different lots of Retumbo I have recently purchased produce higher velocities in my 6.5x284 loads. My original lot a couple of years old, produced 2965 FPS in my 6.5x284. Two recent lots are producing 60FPS higher velocities at 3025 with identical results. To achieve my original velocity of I have to reduce my charge from 59gr to 57.5. After doing this my point of impact, ballistic performance and group size is identical to my original load. I had the exact same effect in my Savage, also a 6.5x284. At 57.5, the load is no longer compressed. Good news is that I can get higher velocities and maintain my accuracy. No pressure signs. Bad news is it's not the same and I wonder if they purposely changed the performance, or just have crappy quality control. Anyone else experience this?
     
  2. Broz

    Broz Well-Known Member

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    Feb 3, 2007
    Yes the newer lots of both H1000 and retumbo are said to be hotter by a significant amount. Hodgdens needs to work on this. It is poor quality control. I combat this by buying large amounts of the same lot. Last order was 40 lbs of H-1000

    Jeff
     

  3. flashhole

    flashhole Well-Known Member

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    Nov 15, 2009
    I use Retumbo in my 25-06 and 7mm Rem Mag. I will keep this in mind but I've always had good repeatability with Retumbo over the years. It would be nice if Hodgdon came out with a Super Short Cut version of Retumbo.