25 meter zero? > Optics, Mounts, and Sights

Posted: 9/29/2011 10:15:27 AM EDT

When zeroing an M4 w/16-inch barrel and 1:7 twist, using M193 Ball, where will the bullet impact at 25 meters to be 'on target' at 200 meters? TIA

Posted: 9/29/2011 10:19:00 AM EDT

[#1]

stole it, did not check to see if it was accurate

hmm should be 25/300 and 50/200 ish

Posted: 9/29/2011 10:44:58 AM EDT

[#2]

According to the above chart, you will be ~10 inches high at 200 yards with a 25 yard zero.

Posted: 9/29/2011 10:54:44 AM EDT

[#3]

Quoted:

When zeroing an M4 w/16-inch barrel and 1:7 twist, using M193 Ball, where will the bullet impact at 25 meters to be 'on target' at 200 meters? TIA

Assuming you are using iron sights, a 25M zero will be ~9" high at 200 yds.

Posted: 9/29/2011 11:02:08 AM EDT

[#4]

Looks like 50y is the way to go.

Posted: 9/29/2011 11:04:47 AM EDT

[#5]

Quoted:
Looks like 50y is the way to go.

+1

Posted: 9/29/2011 11:06:04 AM EDT

[#6]

Quoted:
When zeroing an M4 w/16-inch barrel and 1:7 twist, using M193 Ball, where will the bullet impact at 25 meters to be 'on target' at 200 meters? TIA

About 1" - 1 1/4" low.

Posted: 9/29/2011 11:27:08 AM EDT

[#7]

Right around an inch low for 193 or 855. Any difference off that will be indiscernable given individual sight picture and group size.
You still need to shoot at the longer distance to verify POA/POI at longer range.

Posted: 9/29/2011 11:49:47 AM EDT

[#8]

Quoted:
http://www.jesseshunting.com/photopost/data/500/medium/Zerobulletpaths.jpg

stole it, did not check to see if it was accurate

hmm should be 25/300 and 50/200 ish

Thats a nice chart!

Posted: 9/29/2011 12:21:23 PM EDT

[#9]

Thanks, guys. Looks like the 50 meter zero IS the way to go.

Posted: 9/29/2011 12:33:42 PM EDT

[#10]

Quoted:
Thanks, guys. Looks like the 50 meter zero IS the way to go.

This is where I like mine zeroed.

Posted: 9/29/2011 12:42:17 PM EDT

[#11]

This is for irons and EOTechs/Aimpoints/other red dots. My ACOG follows the 100m zero so the Bullet Drop system works correctly.

Posted: 9/29/2011 12:43:05 PM EDT

[#12]

I currently have my RDS zeroed at 50 yards and was thinking of doing it for 100 yards tomorrow, but maybe I'll just leave it. I just got my BUIS in, so I guess I just confirm zero with the RDS and zero the BUIS at 50 yards.

Posted: 9/29/2011 5:31:34 PM EDT

[#13]

Tag

Posted: 9/29/2011 5:34:32 PM EDT

[#14]

Topic Moved

Posted: 9/29/2011 5:44:10 PM EDT

[#15]

Find the RIBZ thread.

Posted: 9/29/2011 5:47:03 PM EDT

[#16]

When I zero at 25 yards for chest, I'm at around low neck area so few inches high.

at 300 yards, I hit around the abs

Posted: 9/30/2011 6:18:27 AM EDT

[#17]

Optics FAQ, entry #7. I've got a bunch of charts that show bullet trajectories for a ton of zeroes.

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[ARCHIVED THREAD] - 25 meter zero?