What is a good distance to site in a 9mm AR-15???

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[ARCHIVED THREAD] - What is a good distance to site in a 9mm AR-15???

Posted: 1/17/2006 2:34:22 PM EDT

Got a RRA 9mm Flat top with an eo tech. Gonna put a 5" barrell and suppresser on it. Shooting sub sonic 147gr FMJ. I figured 50 yrds would be the best but I would like to try 100 yrds.

What do you guys think is best? Thanks.

Posted: 1/17/2006 2:37:36 PM EDT

[#1]

75 yards

TRG

Posted: 1/17/2006 2:57:29 PM EDT

[#2]

Yup. Looks like 75 yards. You'll be about 1.7" high at 50, and 4.3" low at 100 yards.

I used 1000fps as the velocity (didn't look it up, just assumed right at subsonic).

www.norma.cc/htm_files/javapagee.htm

Posted: 1/17/2006 2:59:47 PM EDT

[#3]

Quoted:

I used 1000fps as the velocity (didn't look it up, just assumed right at subsonic).

www.norma.cc/htm_files/javapagee.htm

Close enough...950fps.

cool page, btw.

Posted: 1/17/2006 3:05:12 PM EDT

[#4]

I used to sight my Colt 9mm in at 50 yds with no problems...

- rem

Posted: 1/17/2006 3:07:00 PM EDT

[#5]

25yds...

groups.msn.com/TheMarylandAR15ShootersSite/9mmzero.msnw

Posted: 1/17/2006 3:55:03 PM EDT

[#6]

I agree with Shivan but if you want to check out what different zero distances will give you, check out this External Ballistics Calculator and roll your own zero.

Posted: 1/18/2006 4:27:10 AM EDT

[#7]

Quoted:
25yds...

groups.msn.com/TheMarylandAR15ShootersSite/9mmzero.msnw

where i sight mine

Posted: 1/18/2006 5:11:37 AM EDT

[#8]

Thanks for asking this question - I was just wondering this myself, as I'm getting my new RRA 9mm upper from ADCO today.

Posted: 1/18/2006 5:27:37 AM EDT

[#9]

Quoted:
Quoted:
25yds...

groups.msn.com/TheMarylandAR15ShootersSite/9mmzero.msnw

where i sight mine

25 yds is where I sighted mine in

Posted: 1/18/2006 6:18:58 AM EDT

[#10]

87 yards is the only acceptable distance!

Posted: 1/18/2006 6:42:04 AM EDT

[#11]

Quoted:
87yards is the only acceptable distance!

Actually, in this particular instance, there is a logical answer to the question so the "87" rule is no applicable. Sorry.

Posted: 1/18/2006 6:48:47 AM EDT

[#12]

50 yds

Posted: 1/18/2006 6:58:15 AM EDT

[#13]

Quoted:
Quoted:
87yards is the only acceptable distance!
Actually, in this particular instance, there is a logical answer to the question so the "87" rule is no applicable. Sorry.

RIGHT!87 yards!