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Old May 31, 2010, 02:05 PM   #1
fsfty
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Sighting an AR

Hi...I'll be sighting in my new AR this weekend, and Im trying to figure out how to go about it. I read the gun's manual, and I set the rear apperture to the bigger setting, as I will only be shooting 50 yards this week. I bought a front sight tool to adjust the height, and I see the rear sight has a windage adjustment for left and right adjusments. I also see a rear adjustment screw for up and down, but if i remember correctly, I should only adjust up and down with the front sight. My sights are A2 sights, and I guess i will be starting at 25 yards saturday. Any advice would be very welcomed. Thanks!
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Old May 31, 2010, 02:17 PM   #2
jokester_143
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Here's a thread that already discusses the topic...


http://thefiringline.com/forums/showthread.php?t=410286
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Old May 31, 2010, 02:36 PM   #3
fsfty
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thanks...I didn't see anything though regarding the rear height adjusment. Should all height adjusments be made with the front sight?
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Old May 31, 2010, 02:43 PM   #4
Pat T
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If you want the standard A2 300 meter battle zero, you should put the target at 27 yards, 4 inches (25 meters). Use the small peep in the rear sight, use windage knob to center the rear sight, elevation knob to bottom, then one click up past 300 on the drum. Fire group & measure from center. If elevation needs tweaked change front sight height (1 notch = 3/8" at 25 meters). Use windage knob on rear sight to center group (1 notch =1/8" at 25 meters). Return elevation knob to 300 when you are through and you are now good to go from point blank to dead on at 300 meters (328 yards). Well, the bullet will rise to a peak of about 6" above center at around 175 yards.

Get the hang of this and see how you like shooting this set up, then if you're looking for something flatter closer in, click on this link Improved Battlesight Zero

Good luck and have fun!

Pat
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Old May 31, 2010, 02:51 PM   #5
fsfty
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Thanks Pat...the manual says i should use the large rear apperture. You're the second person to say use the smaller one. I should definitely use the smaller one? I have the knob also set at 3/8 (fixed handle)...correct?
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Old May 31, 2010, 02:56 PM   #6
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Last edited by noyes; June 4, 2010 at 12:04 AM.
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Old May 31, 2010, 03:00 PM   #7
fsfty
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Awesome...thanks fellas
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Old May 31, 2010, 03:24 PM   #8
ATW525
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Quote:
I will only be shooting 50 yards this week
I would start with IBZ or RIBZ right off, as they will do POA = POI at 50 yards.
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Old May 31, 2010, 03:56 PM   #9
blume357
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Great target noyes!

Looks like each line / box is 1/2" square which relates to 1 minute of angle at 50 yards and 2 minutes of angle (moa) at 25 yards... of course a half at 100.

personally if shooting that target at 25 yards i would add extra thin lines in the middle of each box vertical and horizontal.
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Old May 31, 2010, 05:05 PM   #10
Pat T
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Blume-

Looks like the target is calibrate to show number of click to adjust the sights, more hash marks might just add confusion. You're right about the MOA & different yardages.

ATW-

I considered that when typing my reply to the OP, but he sounds like he's getting the hang of these sights, and didn't want to add frustration by possibly hosing up the elevation drum adjustments. Good call though.

Pat
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Old May 31, 2010, 11:32 PM   #11
Quentin2
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One other thing, if you have a 20" barrel you click up once from 8/3 as described above but if you have a 14.5 or 16" just zero at 8/3 at 25 meters to also get the BZ 300 meter zero.

I also recommend the IBZ but maybe it's best to start slow for now as Pat suggested.
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Old June 1, 2010, 03:18 AM   #12
maestro pistolero
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IBZ is a piece of cake. Chuck Santos instructions are crystal clear.

http://grburnett.us/guns/ImprovedBattlesightZero.pdf

I have done this on three rifles and it works perfectly.
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Old June 1, 2010, 09:06 AM   #13
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oops
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Last edited by Stumper; June 1, 2010 at 09:08 AM. Reason: Reread things-nevermind
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Old June 1, 2010, 02:01 PM   #14
maestro pistolero
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Zero at 50 yards for the flattest trajectory out to 250 yards that crosses over at 200 meters (approx. 218 yards)
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