[ARCHIVED THREAD] - bullet trajectory

Posted: 10/18/2005 4:59:19 PM EDT

I want to sight in a eotech and I heard that a ak round is like a rainbow in regards to it's flight path. I think that I want to use the top of the arch to zero. Anybody have any trajectory graphs or insights on this? Thanks for the help.

Posted: 10/18/2005 5:15:10 PM EDT

[#1]

Trajectory is determined by Muzzle Velocity, you'll need to know your Muzzle Velocity and then you can just use an online ballistic computer to find the Trajectory ...

Edit: You'll also need your Bullet Wt. and Ballistic Coefficient ...

Posted: 10/18/2005 6:00:31 PM EDT

[#2]

Or you could just ask biggerstick he has all that crap memorized. I think he knows ballistics for EVERY round fired from EVERY rifle ever made. I was gonna get a pda and load some programs into it for bullett drop and all. Instead I just take him hunting with me.

Posted: 10/19/2005 1:00:04 AM EDT

[#3]

Come on Biggerstick. I am shooting Barnaul 122 grain hp if that helps. Even if I have a generic graph or chart would help, that way I know where the bullet is .

Posted: 10/19/2005 1:46:49 AM EDT

[#4]

Quoted:
Come on Biggerstick. I am shooting Barnaul 122 grain hp if that helps. Even if I have a generic graph or chart would help, that way I know where the bullet is .

Go get modernballistics, it has all the data.

Posted: 10/19/2005 7:49:53 AM EDT

[#5]

The best way to do it is pick a good distance, like what distance your gonna be shooting at and zero the rifle there. The arch of the bullet is gonna change at all distances. the arch is usually gonna be half of the distance your shooting. Due to the travel of the bullet, which is an arch that is greater at more distances you cannot truly use the highest point in the path as a zero. LIke this
If you rifle is shooting center at 300 yards its highest points is gonna be about 150 yards. At this point the bullett could be 8 inches (just an example) high. But if your firing at 150 yards the highest point is going to be at about 75 yards here your bullet may only be 4 inches high. Undertand? Its kinda complicated but when you figure it out, its easy.

Posted: 10/19/2005 9:42:24 AM EDT

[#6]

Quoted:
Come on Biggerstick. I am shooting Barnaul 122 grain hp if that helps. Even if I have a generic graph or chart would help, that way I know where the bullet is .

Cptbwst, you have this whole thing wrong. Your high point will be about halfway between the muzzle and your zero. No matter where you zero. Think of it like this. If I zero my 30-06 at 200yrds, my highest point is about 2" at 100yrds. If I re-zero my 30-06 at 100yrds, then the highest point changes to about .8" at 50yrds. To determine where to zero your red dot scope, first determine what your shooting goals are. Personally, on 7.62x39 I would zero at 100yrds. This will give you around 1.5" high at 50 yrds, and around 4" low at 150yrds, depending on the load.

Posted: 10/19/2005 12:07:48 PM EDT

[#7]

I get what you are saying. I guess I did not think it out enough. I will try the 100 yard and see how I like it. I also downloaded the balistic program. Thanks guys.

Posted: 10/19/2005 12:10:44 PM EDT

[#8]

Check this stuff out, this may be of some help www.chuckhawks.com/rifle_trajectory_table.htm

Posted: 10/19/2005 2:59:28 PM EDT

[#9]

Quoted:
I get what you are saying. I guess I did not think it out enough. I will try the 100 yard and see how I like it. I also downloaded the balistic program. Thanks guys.

No problem, and good luck. Bob posted a link to Chuck Hawks' site, that is a well of great information.

Posted: 10/19/2005 3:19:57 PM EDT

[#10]

Here is some information on the battle AK set up.