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 Adjusting iron sights--a 'how to'
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GLV
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USA
8866 Posts

Posted - January 26 2007 :  5:10:21 PM  Show Profile  Send GLV an ICQ Message  Send GLV a Yahoo! Message  Reply with Quote
Basics quoted from Wikipedia--great information. http://en.wikipedia.org/wiki/Iron_sights#How_to_change_point_of_impact

To move the line of sight down(the shot hit below the point of aim) the rear sight is raised or the front sight is lowered.

To move the line of sight up (the shot hit above the point of aim) the rear sight is lowered or the front sight is raised.

To move the line of sight left (the shot hit left of the point of aim) the rear sight is moved right, or the front sight is moved left.

To move the line of sight right (the shot hit right of the point of aim) the rear sight is moved left, or the front sight is moved right.

The next question is 'how much'?

The formula in Wikipedia is a bit complicated for me, so here is the same thing simplified, at least for me:

All numbers are in inchs: Example [25yds=900"], divided by sight radius in inchs [the revolver I am carrying today is 4.5"from back of front sight to back of rear sight] gives a factor, in this case 200.

Lets say this gun is shooting 6" high at 25 yards [900inchs]. Divide the factor [200] into 6, the amount of correction needed, equals 0.030, or thirty thousands of an inch the rear sight needs to be adjusted [lowered] in order to bring POI and POA together.

Questions? Ask away, and I'll try to answer them.


'the world is round everywhere'

'The meek will inherit the earth, but only after the last soldier has left it to them in his will'

Evan
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34116 Posts

Posted - January 26 2007 :  5:54:31 PM  Show Profile  Reply with Quote
okey, what is that street in Lichenstein that goes by the river?

"The greatest thing a Father can do for his children is to love their Mother."

Harold B. Lee

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GLV
Moderator

USA
8866 Posts

Posted - January 26 2007 :  7:34:47 PM  Show Profile  Send GLV an ICQ Message  Send GLV a Yahoo! Message  Reply with Quote
I triedbut failed

'the world is round everywhere'

'The meek will inherit the earth, but only after the last soldier has left it to them in his will'
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Adj1
Senior Member

USA
502 Posts

Posted - January 26 2007 :  10:18:52 PM  Show Profile  Reply with Quote
[quote]Originally posted by Evan

okey, what is that street in Lichenstein that goes by the river?/quote]

Which side of the river?

Democracy is two coyotes and a sheep debating the dinner menu. Liberty is a well armed sheep, willing to contest the outcome of the vote.
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GVHLAW
Average Member

USA
379 Posts

Posted - January 27 2007 :  01:50:35 AM  Show Profile  Reply with Quote
The street that crosses the river is the Bahnhofstrasse.

"Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."

John F. Kennedy
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zeke
Average Member

250 Posts

Posted - January 27 2007 :  08:38:15 AM  Show Profile  Reply with Quote
GLV-am sorry, but can not resist, and am needing a little humor this morn.

Message to self, how confusing can a simple subject be made by a technical person, while taking the fun out of sighting in new pistol As a technical person who is frequently called upon to explain a specific technical subject to groups of people, am familiar with the "blank stare syndrome". If not careful, this is followed the by the "audience falling asleep syndrome"

Barrel length certainly comes into the equation of line of sight, as does barrel weight,grip on the pistol, bullet weight, bullet bearing length and velocity.

Perhaps a funner sight in procedure.

1-go to range
2-shoot at target at close distance, adjust sights close
3-go back to desired distance, bench pistol and adjust sights
4-stay at desired distance, adjust for free hand shooting
5-check POI at various other distances

To raise POI, raise rear sight or lower front sight.
To lower POI, lower rear sight or raise front sight
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Evan
Administrator

34116 Posts

Posted - January 27 2007 :  08:53:19 AM  Show Profile  Reply with Quote
the side that Harry walks his dog, of course-this it what happens when you work a 90 hr week

"The greatest thing a Father can do for his children is to love their Mother."

Harold B. Lee

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spartiati
Starting Member

2 Posts

Posted - September 02 2007 :  8:24:25 PM  Show Profile  Reply with Quote
If you mean iron sights in reference to non-adjustable sights, we were taught in armory and gunsmithing school the way to move the sights is to slap the barrel against a large lead ingot in the direction you wish to move the barrel to the target group while holding the grip below the trigger guard. It's best to do this at the target bench and ensure you perform a unload check each time. It takes about 30 mins. to correct in my experience.
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GLV
Moderator

USA
8866 Posts

Posted - July 29 2008 :  11:55:21 AM  Show Profile  Send GLV an ICQ Message  Send GLV a Yahoo! Message  Reply with Quote
If the sights can be moved, it will work with any gun. If the sight is integral to the barrel/shroud, movement would not be possible.

'the world is round everywhere'

'The meek will inherit the earth, but only after the last soldier has left it to them in his will'
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jimmylee
Junior Member

173 Posts

Posted - June 30 2010 :  1:02:13 PM  Show Profile  Reply with Quote
GLV--Uh oh, you forgot to show the metric conversion for the amount of adjustment. It should be based on 25.4mm/inch for those of you who are not metricly minded but may have a metric dial indicator. Is that a word (metricly)?

Edited by - jimmylee on June 30 2010 1:05:56 PM
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Biggfoot44
Advanced Member

2233 Posts

Posted - July 01 2010 :  3:38:16 PM  Show Profile  Reply with Quote
If impact hits low enough to bother you, carefully file front sight. If hits high enough to bother you, switch to a heavier (weight) bullet.
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GLV
Moderator

USA
8866 Posts

Posted - July 02 2010 :  7:11:46 PM  Show Profile  Send GLV an ICQ Message  Send GLV a Yahoo! Message  Reply with Quote
Good point Jimmy, for those so challenged.

'the world is round everywhere'

'The meek will inherit the earth, but only after the last soldier has left it to them in his will'
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SJC3081
Junior Member

USA
191 Posts

Posted - May 31 2013 :  9:53:14 PM  Show Profile  Reply with Quote
Move the front sight in the direction you want the bullet to go.
Move the rear sight in the opposite direction were you want the bullet to go.

When treason prospers none dare call it treason.
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RandyB45
Advanced Member

2413 Posts

Posted - May 31 2013 :  10:15:10 PM  Show Profile  Reply with Quote
quote:
Originally posted by SJC3081

Move the front sight in the direction you want the bullet to go.
Move the rear sight in the opposite direction were you want the bullet to go.

Now you've done it.
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