M4 ballistics question

[BadMuther]

I'll post some links from kyle lambs book and see if you still think 25m is a good zero.

Keep the 25 meter zero in context, Training a LARGE group of Soldiers requires a lot of time management. I am not disagreeing with you I am just talking about something I understand. I have not been a member of a shooting club, police force or Delta force...I am merely an Infantry guy looking at the problem from and Infantry guy's perspective.

Dan, that was kinda what I was getting at. Training large groups of guys you might only have access to a 25m range.

After you zero at 25m if you wanted to you could adjust your front site post with the technique I described so that you had a 50 yd zero.

I'm sorry I'm not better at explaining it, and my computer is slow as molasses today.

edit: I'm not a D-fo guy either, but I'll learn from anybody that has anything to offer....especially if their knowledge comes from the real world like delta! :D

[BadMuther]

To help you guys out in choosing a zero range....

(This is from Green eyes, black rifles, Kyle Lamb)

[BadMuther]

Using 55grn, with a 25 yard zero you are 5.86 inches high at 100 and 9.31 inches high at 200!! Which sucks if all you have to shoot at is a head sized target!!

Using 55grn with a 50 yd zero, you are 1.39 inches high at 100, and .036 inches high at 200.


Using mil 62 grn, with a 25m zero you are 5.46 at 100m, and 7.13 at 200.

With 62grn and a 50m zero, you are only 1.11 inches high at 100, and 1.56 inches high at 200.

Food for thought.

Paul Howe's system of zeroinging slightly high at 100 seems like a good option, but like I said, I haven't been able to try it out yet.

[Rangeratlarge]

ADDITIONAL QUESTION???

OK so we have been debating the sighting/zeroing. BUT.....

Is the standard weapon DESIGNED to be zeroed at a certain distance???? My small owners booklet from Busmaster says to use the 25 meter zero. I get that there are ways and reason to zero at different distances but is the weapon manufactured for only 25m ???

RaL

[Rangeratlarge]

To help you guys out in choosing a zero range....

(This is from Green eyes, black rifles, Kyle Lamb)

Checked out the promo for it on amazon. looks good and will order!! THANKS!!

[dbmtrman]

The documentation posted explains my reasoning. If you are zeroed at 50. You are going to be well withing 2 inches at 200 yds. and just over an inch at 25 yds. When speaking of a patrol rifle, in law enforcement deployments that is more then adequate. If you can put the round within 2 inches of center mass, you will usually get the desired results. Obviously with iron sights, engaging suspects under stress, any hits in the K-5 is good.

[BadMuther]

ADDITIONAL QUESTION???

OK so we have been debating the sighting/zeroing. BUT.....

Is the standard weapon DESIGNED to be zeroed at a certain distance???? My small owners booklet from Busmaster says to use the 25 meter zero. I get that there are ways and reason to zero at different distances but is the weapon manufactured for only 25m ???

RaL

Short answer is no brother. Bushmaster put that in there because the army zeroes at 25.

When I was in the military it used to chap my ass to shoot the KD ranges at 100 and 200...I was like wtf???

Change is hard, but throw a 50 yd zero on and at least try it! The book is well worth it! If all else fails get rolled out of patrol Mike to show you how to shoot!

[Rangeratlarge]

Might try going to the range tomorrow and throw a 50y zero on the GAT!!!

[Rangeratlarge]

Might try going to the range tomorrow and throw a 50y zero on the GAT!!!

Went today and messed with it some. Will go back next week and refine. Ammo very expensive .50 every trigger pull!!!!