Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
User Panel
bravocompany
brownells
GS
troy
skd
SDS
magpul
JRH
silencerShop
springfield
laRue
fightlite
delton
palmetto
CA
primaryArms
jt
midwest
vortex
VP
Hit
geissele
aim
RS

Pro2A
brownells
springfield
dsa
geissele
JRH
gray
Faxxon
SAS
fightlite
palmetto
bravocompany
THBRD
primaryArms
LAPG
CA
silencerShop
blackhills
jt
RS
ar15com
cmmg
LAPG
bravocompany
cmmg
tnvc
trijicon
GO
Users Online4129 Online
bravocompany missing Hydra
Page AR-15 » AR Discussions
AR Sponsor: bravocompany
Site Notices
Site News 2024's Favorite CCW? | PSA Micro Dagger
Archived [ARCHIVED THREAD] - Trajectory difference
Posted: 3/14/2011 8:14:30 AM EDT
Is the trajectory difference that much between 18" to a 20"?  I am planning on running an 18" barrel with rifle length gas system which will have a rifle length sight radius.  If I zeroed the rifle at 50yd will it be on at 200yd as well?  I know that is the case for my 20".

Link Posted: 3/14/2011 10:18:53 AM EDT
[#1]
You are not going to notice the difference between an 18 and a 20 inch barrel at 200 yds.  Their difference in muzzle velocity should only amount to an inch or less (most likely closer to 0.5") in POI at 200 yards with a 50 yard zero.

Link Posted: 3/14/2011 11:36:28 AM EDT
[#2]
Any idea in the difference between the standard 25/300 yrd zero?  I am trying to figure out if I can go with the 18" and keep my iron setup I have on my 20".

Link Posted: 3/14/2011 11:48:47 AM EDT
[#3]
Quoted:
Any idea in the difference between the standard 25/300 yrd zero? I am trying to figure out if I can go with the 18" and keep my iron setup I have on my 20".


No, you will have to re-zero.
Archived [ARCHIVED THREAD] - Trajectory difference
Page AR-15 » AR Discussions
AR Sponsor: bravocompany
Close Join Our Mail List to Stay Up To Date! Win a FREE Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Must have a registered ARFCOM account to win.
RS
gray
bravocompany
LAPG
CA
SAS
geissele
brownells
palmetto
dsa
THBRD
Faxxon
fightlite
primaryArms
jt
springfield
Pro2A
blackhills
LAPG
JRH
cmmg
silencerShop
ar15com
missing
AR-15 AK-47 Handgun Precision Rifles Armory Training Competitive Shooting General Outdoors Archery Hometown Industry

About AR15.COM

Become an AR15.COM Team Member

AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.

From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.

Stay Connected

AR15.COM Facebook AR15.COM Twitter AR15.COM YouTube AR15.COM Instagram
Pepperjam Verification

Newsletter

Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.

Contact Us

Advertising
[email protected]
General
[email protected]

Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.

AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.

Advertising Memberships ARFCOM Shop Gear Deals Virtual Weapon Build Discussion Forums Help Privacy DMCA About Mobile Site View Your Privacy Choices California Consumer Privacy Act (CCPA) Opt-Out Icon   Goat Signal
** When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs include, but are not limited to, the eBay Partner Network and Amazon.
Top Top