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post #1 of 9 (permalink) Old 09-18-2015, 01:24 PM Thread Starter
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Bullet drop or rise

I am shooting a NE .223, 55 grain V-Max, 27.5 gr. of 748 power, Vol 3309. At 100 yds I'm hitting 1 1/2 inches high. (This is the reload this rifle likes.) Where should I be at 50 yds and at 200 yds? I have tried to find a chart on the web but not sure how to read it. Thank you.
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post #2 of 9 (permalink) Old 09-19-2015, 01:14 AM
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Re: Bullet drop or rise

With your current sight-in you should be just under 1/2" high (.4") at both 50 and 200 yards.

That would put you just about 6" low at 300 and 20" low at 400 yards.

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post #3 of 9 (permalink) Old 09-19-2015, 09:30 AM Thread Starter
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Re: Bullet drop or rise

Strut10 -- Thank you very much!! The range was very busy yesterday, I could only fire at the 100yd line.
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post #4 of 9 (permalink) Old 09-20-2015, 04:16 PM
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Re: Bullet drop or rise

Strut give you good advise on the point of impact. Another rule of thumb is when the bullet leaves the barrel the laws of gravity takes over and it will drop never rise. The reason why it hits at those points strut explained is from your line of sight.
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post #5 of 9 (permalink) Old 09-23-2015, 01:14 AM
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Re: Bullet drop or rise


coffinmaker,

Technically, it's not that easy. It depends on the height of your center of your scope above the center of the bore. And the ballistic coefficient of your bullet. All ballistics calculators ask for this. But, to get all the answers you need, go here:

Hornady Ballistics Calculator

Just plug in your data and calculate. You have to change the interval to 50 yards to get all the answers to the questions you asked.

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post #6 of 9 (permalink) Old 09-26-2015, 10:21 AM
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Re: Bullet drop or rise

Quote:
Originally Posted by PeteMacMahon
coffinmaker,

Technically, it's not that easy. It depends on the height of your center of your scope above the center of the bore. And the ballistic coefficient of your bullet. All ballistics calculators ask for this. But, to get all the answers you need, go here:

Hornady Ballistics Calculator

Just plug in your data and calculate. You have to change the interval to 50 yards to get all the answers to the questions you asked.
The numbers I gave are, of course, approximate for a generic setup.

HOWEVER...........

They WERE derived from the data specific to a his particular bullet albeit using a "standard" 1 1/2" difference between line-of-sight and line-of-the-bore.

For the sake of argument (although there really IS no argument) we can change the sight:bore lines by 50% from standard and still aim the same place to hit at 400 yards.

Unless you want ballistics numbers for splitting hairs at 400 yards, the info I gave you is perfectly valid.

demokraten saugen
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post #7 of 9 (permalink) Old 10-07-2015, 11:16 AM
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Re: Bullet drop or rise

Quote:
Originally Posted by Strut10
With your current sight-in you should be just under 1/2" high (.4") at both 50 and 200 yards.

That would put you just about 6" low at 300 and 20" low at 400 yards.
Bingo!!!
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post #8 of 9 (permalink) Old 10-07-2015, 06:18 PM Thread Starter
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Re: Bullet drop or rise

Thanks to all.
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post #9 of 9 (permalink) Old 10-08-2015, 01:57 AM
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Re: Bullet drop or rise

Quote:
Originally Posted by Strut10
For the sake of argument (although there really IS no argument) we can change the sight:bore lines by 50% from standard and still aim the same place to hit at 400 yards.
Strut10, I meant you no disrespect in my posting to coffinmaker and I was not saying that your numbers where wrong. Just wanted to point out to the OP that there is a formula and there is a free online version of it.

Yeah, you are spot on for minute of gopher head. After I figured out that his actual sight zero for that bullet at that speed and 1.5 inches high at 100 yards equals a 210 yard zero, I plugged in both .75 & 2.25 for the height of the scope and it only makes 1.4 inch difference at 400 yards. Cool.

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