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Old 11-17-2012, 11:32 PM   #1
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Default zeroing question about ammo

will the zero on my rifle change if i switch from 150 grain to 165 grain ammo. im shooting a model 700 in 308 win.



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Old 11-17-2012, 11:34 PM   #2
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Old 11-17-2012, 11:47 PM   #3
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yeah not going to shoot farther than 200 yards at white tail deer

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Old 11-17-2012, 11:50 PM   #4
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Old 11-18-2012, 12:25 AM   #5
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Quote:
Originally Posted by ANAKINANAYA View Post
will the zero on my rifle change if i switch from 150 grain to 165 grain ammo. im shooting a model 700 in 308 win.
Search for [online] ballistics calculator.
  • Hornaday has one.

or down load Remingtons for the PC.
THIS IS THE ONE I LIKE. (IT GRAPHS )
http://www.remington.com/pages/news-and-resources/downloads/remington-shoot-software.aspx

Now.. assuming that the 150 gr was zeroed at 200 yards, then expect the 165gr to be about 1/10th of inch off.

Given that they will both zero at about the same point at 200 yards, let's look at 100 and 300 and see what happens.

Look at the charts. The remington loads are close enough. You luck out.





-10.41.
150-gr-remington-graph.jpg   165-grain-remington-graph.jpg  
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Old 11-18-2012, 12:47 AM   #6
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It might or it might not. There are many factors involved. My .222 Remington will keep the same zero no matter what I shoot through it. My 7x57 will sometimes deviate more than 3 inches going from one weight of bullet to another one. You really just have to shoot it and see what happens.
cottontop

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Old 11-18-2012, 03:32 AM   #7
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the only way to tell is shoot it and see!

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Old 11-18-2012, 08:27 AM   #8
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Zeroed at 100 yrds, using Winchester hunting grade ammo, the 168 gr will drop about 1 inch more at 200 yds than the 150 gr. 3.6 inches below line of sight for 150, and 4.1 inches for 168 gr.

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Old 11-18-2012, 05:18 PM   #9
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Zeroed at 100 yrds, using Winchester hunting grade ammo, the 168 gr will drop about 1 inch more at 200 yds than the 150 gr. 3.6 inches below line of sight for 150, and 4.1 inches for 168 gr.
And those deer don't carry 10th inch Engineers Scale. !
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Old 11-18-2012, 10:03 PM   #10
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If you are changing ammo,whether it's a different brand or weight of bullet,it's always best to shoot the rifle and find out where it's going to shoot.
Every barrel is different,and POA/POI changes will vary in every rifle.You can't just go by what a ballistic chart tells you.
What shoots +/- an inch in one gun,might be +/- 3-5 inches in another.



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