Ballistics Point of Impact??? - The HuntingPA.com Outdoor Community
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post #1 of 16 (permalink) Old 11-13-2018, 06:55 AM Thread Starter
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Ballistics Point of Impact???

OK you ballistics experts who have calculators, apps etc. I tried using some online with no success.

What would the point of impact at 100, 150, 200 & 250 yards be for the following if zeroed in at 50 yards:

Scope crosshair height above bbl: 1.5"
Caliber: 6.5X55(.264)
Bullet Weight/Design: 156 grain pointed sp
B.C.: .346
Muzzle Velocity FPS: 2,559

Thanks much!!

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Last edited by Loggy; 11-13-2018 at 06:59 AM.
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post #2 of 16 (permalink) Old 11-13-2018, 07:30 AM
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Here is the rough results, it would need to be tuned slightly for your atmospheric and weather conditions but it should be close enough.
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post #3 of 16 (permalink) Old 11-13-2018, 07:34 AM Thread Starter
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Thanks CMP!!

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post #4 of 16 (permalink) Old 11-13-2018, 07:38 AM
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there were some assumptions taken for this calculator. For ballistic coefficient I assumed it was the G1. this is also with 0 wind.
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post #5 of 16 (permalink) Old 11-13-2018, 07:41 AM
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Here's one from the Hornady website. They even have a little cheat sheet you can cut our and tape to your stock.
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post #6 of 16 (permalink) Old 11-13-2018, 08:00 AM Thread Starter
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Thanks Ken & Schappelt!!

Great info!! You guys did better than I did!! I'm printing this out for future reference.

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post #7 of 16 (permalink) Old 11-13-2018, 10:24 AM
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Interesting but why a 50 yard zero? A 100 yard zero is only a fraction of an inch high at closer range but will have less drop at the longer distances listed?
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post #8 of 16 (permalink) Old 11-13-2018, 10:41 AM
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Quote:
Originally Posted by Asajoe1 View Post
Interesting but why a 50 yard zero? A 100 yard zero is only a fraction of an inch high at closer range but will have less drop at the longer distances listed?

I agree with Asajoe. That round has a lot of potential why limit yourself.
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post #9 of 16 (permalink) Old 11-13-2018, 10:51 AM Thread Starter
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I plan to hunt areas of heavy laurel plus thick swamps this year for bear where potential shots are at best in the 50 yard range so zeroed a new heavier bullet in at 50. Was curious on trajectory at longer distances in unlikely event I’m offered one. I previously was shooting the 140 grain Hornady Superformance zeroed at 100yds and changed to 156 grain Norma Orynx.

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post #10 of 16 (permalink) Old 11-13-2018, 06:52 PM
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https://www.hornady.com/team-hornady...alculators/#!/

Here is a link to the Hornady calculator. Its easy to use and you can make adjustments to your zero to best accommodate your needs.

Good luck, Tony
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