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Thread: Seating die acceptable tolerance?

  1. #16
    phil384's Avatar
    phil384 is offline Likes to eat trifle wearing scuba gear
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    Quote Originally Posted by Swarmboss View Post
    Have you aligned the seating die in your press before seating the bullets as this can make these kinds of measurement issues?
    Cheers....Ivor....
    I have indeed.
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  2. #17
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    Have you shot them and found it makes a difference?
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  3. #18
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    Quote Originally Posted by pothunter View Post
    It will though, the seater stem will engage with the bullet at a set diameter on any bullet, any differences in length forward of that engagement point will lead to differences in length.
    Perfect explanation 👌

    The discrepancy is in the the v max tip....

    Rich

  4. #19
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    Why not group them together in terms of OAL's and shoot them in series, see what differences in makes on the target. I suspect there will be far more random effects from other component tolerances and environmental impacts on the day you shoot. I've found differences in BTO with Hornady AMAX in the region of 10 thou between batches, didn't seem to make much difference on the target, even at 800 yards. Similarly with Berger and Sierra projectiles.

  5. #20
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    If your measuring COAL to the tip of the bullet the measurements will be all over the place. I’ve had as much as 10 thou variance in a box of premium match bullets. But the ogive measurements were all spot on.

    If you use a comparator you’ll see that variation reduce to less than .002”.

    Cheers
    Greg

  6. #21
    phil384's Avatar
    phil384 is offline Likes to eat trifle wearing scuba gear
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    Cheers chaps
    Daystate Air Ranger FAC - Kral Bullpup & NP03 - CZ 452 .22lr - Lithgow 17hmr - Remington 783 .223 - Franchi 612vs 12G - Renato Gamba 12G O/U - Hatsan Escort 12G
    Nostalgia isn't what it used to be.....

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