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Thread: IMR 4064

  1. #21
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    Quote Originally Posted by Krazykarl View Post
    4. 6.5 creedmoor has proven to be a little tricky for me to work up loads. I think I read that Markm had the same sentiment.
    ABSOLUTELY!! And when I get a successful load, the next weekend it's barely MOA. To your velocity issue... do you see the chance to go over published max safely??

    I say this because I've had batches of 4064 (as mentioned) where the velocity changes dramatically.
    "You people have too much time on your hands." - scottryan

  2. #22
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    I have 6.5 Sig Cross. 1st time loading I had sig new 6.5cm brass and 8208 and 107 SMKs from loadind for my 6.5 Grendel. I had sd of 19 and average velocity was 2935 and sub moa

    Sent from my SM-G991U using Tapatalk

  3. #23
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    Results

    Sent from my SM-G991U using Tapatalk

  4. #24
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    Markm,

    Thank you for the reminder, yes there is still some room left to experiment with using IMR 4064 and 123 SST. I went as high as 38.0 gr. It measured 2608 fps but precision suffered opening to 2.0 inches. My digested recipe sources are:

    1. 35.0 min - 38.0 max = 2882 fps
    2. 36.0 min - 39.0 max = 2900 fps
    3. 36.2 min - 39.2 max
    4. 38.5 max

    Maybe this week I can get back out and try a few more. But, if the precision does not improve from the trending 2.0", there is no point.

    As far as the IMR 4350, I will repeat the 44.0 grain load using the 123 gr bullet. With the well documented temperature sensitivity of this powder, I really don't want to try for the published 44.4 maximum charge.

  5. #25
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    Can someone post any links to documented IMR4350 temperature stability?


    I have been shooting a bit of it and I feel like I notice my DOPE change even when its a 10-15* difference.

    It's getting to the point where I want a different powder. Anyone know if BLC2 or Staball 6.5 is actually stable? I just want predictable dope. I need to know my misses are marksmanship.
    Tactical Nylon Micro Brewery

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