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Thread: ballistics: sight-in distance for ps90 & ss198

  1. #21
    Junior Member elVatoRojo's Avatar
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    Handloads.Com Ballistic Calculator

    This is a web-based ballistics calculator that seems to have a few more inputs to calculate trajectories.
    No input for barrel length. Only thing it cares about on the weapon is the distance between the sight and the barrel bore. FPS of the bullet out of the barrel is the important piece.
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  2. #22
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    Quote Originally Posted by AF1 View Post
    Looks like 75 yd zero is the way to go for OEM barrel length and SS197 Blue tip rounds and if you want to stay within CQB distances up to 100 yrds:

    ss197: 40gr @2150fps @75yd zero
    yards rise+/drop-
    025 -2.1"
    050 -0.8"
    075 *0.0*
    100 +0.1"
    150 -1.8"
    200 -7.1"
    250 -16.8"



    Thanks for posting!!

    those are real close to the figures i got for this combination. i'm glad to have some confirmation that i seemed to be on the right track. thanks! /gt
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  3. #23
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    Quote Originally Posted by elVatoRojo View Post
    Handloads.Com Ballistic Calculator

    This is a web-based ballistics calculator that seems to have a few more inputs to calculate trajectories.
    No input for barrel length. Only thing it cares about on the weapon is the distance between the sight and the barrel bore. FPS of the bullet out of the barrel is the important piece.
    this seems pretty useful. i have at 3-4 apps for these calculations, but no way to do them on the computer. i'd probably still have to check another set of tables or my apps to bet the ballistic coefficient though.

    thanks for posting this! /gt

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  5. #24
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    I was just now trying to find this information!THANK YOU very much you guys for figuring this out! still learning all this myself and find it all very interesting and exciting to learn. I shoot mostly 22lr. from my s&w m&p 15-22 and my fiance and I have got VERY good with it, can take off barbies head at 100 yards within a few shots. We'll be working out farther and farther, this kind of research is a part of how we tune up our guns to be as tack driving as possible. that and we are both instinctive shooters and quite good at that. thanks again for doing the work!!

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