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Thread: 10 grains difference.

  1. #1

    10 grains difference.

    evening all,can anyone tell me how much difference using 90g compared to 100g will affect my zero? zeroed at 100m with 100g dead centre. many thanks.

  2. #2
    Quote Originally Posted by Cannon fodder View Post
    evening all,can anyone tell me how much difference using 90g compared to 100g will affect my zero? zeroed at 100m with 100g dead centre. many thanks.
    The only sure answer is for you to test 90gr ammo v 100gr ammo. My only other comment is to set the POI higher at 100m, perhaps 25mm high? Regards JCS

  3. #3
    yeah jc just wondered what to expect.

  4. #4
    Impossible to say without testing it surely?
    I recently converted to 120grn homeloads from 156grn factory and witnessed very little shift from original zero.....but i expected to see more.

  5. #5
    Quote Originally Posted by Cannon fodder View Post
    yeah jc just wondered what to expect.
    I just set up one round to stalk with and set it to impact an inch high at 100yds. I may practice with other rounds, but I don't adjust the zero and just shoot for group when I'm practising.

    Regards

    JCS

  6. #6
    There is no answer to this question it just depends where on the barrel vibration the bullet leaves the barrel. Only way to be sure is to try it on paper.
    How's your end of the gene pool today?

  7. #7
    ive been shooting with norma 100gr and fedral 100gr but found a local fishing shop has ppu 90gr and at 13 can keep norma for deer and 90's for range practise. Just wanted to roughly know so didn't look complete dick at range.

  8. #8
    You won't look a complete dick. As has been said shooting different bullet weights especially when from different manufacturers are unlikely to go to the same POI. However you will be " on paper " at 25 - 50m which is what I would do before shooting a group at 100m.

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