Proper Use of Iron Sights
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Old 05-13-2014, 01:39 PM   #1
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Default Proper Use of Iron Sights

Ok, I was reading another forum at the S&W site, someone was having problems with iron sights so one of the comments stated they should be using the larger opening on the rear sight for up to 200 yards and then use the small opening for 300 yards +, is this correct? Thank you.


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Old 05-13-2014, 01:42 PM   #2
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Default Stumpt...............

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Originally Posted by jrfusatf View Post
Ok, I was reading another forum at the S&W site, someone was having problems with iron sights so one of the comments stated they should be using the larger opening on the rear sight for up to 200 yards and then use the small opening for 300 yards +, is this correct? Thank you.
What rifle or pistola..................:conf used:


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Old 05-13-2014, 01:44 PM   #3
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Rifle sir! Windham Weaponary WW-15.
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Old 05-13-2014, 01:55 PM   #4
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Default Questions..................

Is the bore worn out..............Is the barrel floating against the stock. are you left eye dominate. is your ammo 10 different shades of grey................Are you lets say a minnie mouse or micky mouse..........No pun intended..........sounds more like the bore.................
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Old 05-13-2014, 02:07 PM   #5
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I think there is some confusion here, when using iron sights up to 75 yards should the small or large opening on rear sight be used.
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Old 05-13-2014, 02:26 PM   #6
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For 'quick' shooting (CQB) I use the large aperture. At ABOUT (circumstances my very so this a just a guide line) the 25 yd line I switch to the smaller aperture.
"Aim big miss big, aim small miss small"!
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Old 05-13-2014, 02:40 PM   #7
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The large aperture is for cqb, night fire, protective mask firing and short range (about 25 meters)


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Old 05-13-2014, 02:46 PM   #8
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Thank you!
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Old 05-13-2014, 02:48 PM   #9
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So we're no closer to the target, with these replies..........lol......It use to be you could practice all week long, now you can't even afford the groceries...........
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Old 05-14-2014, 12:22 AM   #10
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From US Army - Operator's Manual for M16 and M16A1 rifles TM 9-1005-249-10 dated 1985

1 REAR SIGHT - Has two apertures for range.
Use the unmarked aperture for targets from 0 -300 meter.
Use the aperture marked L for targets from 300-400 meters.


US Army - Rifle Marksmanship M16 and M4 Series Weapons (2008) FM 3-22.9 dated 2008

2. For M16A2/3/4, M4, and M4A1 weapons only: Soldiers should use the
unmarked aperture for zeroing and target engagement at all distances on the KD
range. When engaging targets beyond 300 meters, the windage knob should be
adjusted to the range of the target. 400-meter targets will be set on 4 flush, and
450-meter targets will be set on 4 plus two clicks.
3. For M16A1 rifles only: Soldiers should use the unmarked aperture (short-range) for refining zero at 300 meters. For target engagements beyond the 300-meter line, Soldiers should use the long-range aperture (L).

Any alignment error between the front and rear sights repeats itself for every meter the bullet travels. For example, at the 25-meter line, any error in rifle alignment is multiplied 50 times. If the bullet is misaligned by 1/10 of an inch, it causes a target 300 meters away to be missed by 5 feet.


Hope this helps


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