new barrel accuracy
You are Unregistered, please register to use all of the features of FirearmsTalk.com!    
Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion >

new barrel accuracy


Reply
 
LinkBack Thread Tools Display Modes
Old 01-15-2014, 01:06 AM   #1
Feedback Score: 0 reviews
 
Join Date: Aug 2011
Posts: 33
Liked 9 Times on 5 Posts

Default new barrel accuracy

I am trying to squeeze the most accuracy i can from my windham mforgery. I have replaced the trigger with an SSA-E, and free floated the chrome lined barrel. With hand loads (22.5 grains benchmark and hornady 55 grain soft points) the best I can get is about 1 moa, and I average 1.5 moa. I am thinking of replacing the barrel with an 18" stainless RRA. If I were to spend the $300 on a new barrel, how much of an improvement would I get?
rodl is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 01-15-2014, 01:15 AM   #2
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 19,272
Liked 6823 Times on 3626 Posts
Likes Given: 513

Default

Most 55, well all 55 grain bullets are pretty crappy. Try loading with 69 or 75 grain sierra matchkings. Most of my rifles really like the 69grain smk.

The reason 55's are pretty crappy is they are made cheaply and the jackets are far far far from uniform in thickness. If your getting 1-1.5 with 55's you prolly already have a decent barrel. You just need higher quality bullets
__________________
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

"I crapped my pants to avoid the draft!!" -Ted Nugent

Last edited by JonM; 01-15-2014 at 01:19 AM.
JonM is offline  
 
Reply With Quote
Old 01-15-2014, 02:07 AM   #3
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Steel_Talon's Avatar
 
Join Date: Aug 2012
Location: Cochise County,AZ
Posts: 1,766
Liked 990 Times on 653 Posts
Likes Given: 1274

Default

What's your barrel twist rate?
__________________
'Steel cuts flesh / steel cuts bone / steel does not cut steel.'

Become steel or get cut.
Steel_Talon is offline  
 
Reply With Quote
Old 01-15-2014, 02:46 AM   #4
Feedback Score: 0 reviews
 
SSGN_Doc's Avatar
 
Join Date: May 2012
Posts: 4,750
Liked 2512 Times on 1477 Posts
Likes Given: 577

Default

Have you tried adjusting powder charge slightly? How meticulous are the handloads? Are all the cases trimmed weighed and sorted by brand and weight. Do you hand trickle the powder for the last grain + of powder charge weight? Do you sort your projectiles by weight? What kind of crimp are you using? What kind of sights?

It can get really nit picky if you are trying to wring the absolute best accuracy out of a barrel.

That being said, the RRA match barrels I've shot and seen better shooters than me shoot, are definitely capable of sub MOA groups with the right factory loads or right, and carefully prepared handloads.
SSGN_Doc is offline  
 
Reply With Quote
Old 01-15-2014, 03:36 AM   #5
Feedback Score: 0 reviews
 
CamoToe1's Avatar
 
Join Date: Mar 2012
Posts: 261
Liked 65 Times on 53 Posts

Default

Twist rate and chrome lining are two big factors on accuracy. Chrome lining is great for maintenance and barrel life, but not accuracy.

55 gr bullets seem to really like the 1x9 twist rate. If your barrel is 1x7, it will favor the 68-75 gr bullets. The most accurate 55g load I've found for my 1x7 chrome lined is 55g vmax with 24.7gr H335 and magnum primer.(be sure to start low and work up) that said, 75 gr bullets have been the most accurate.

I do believe the RRA 18" barrel will make a noticeable improvement over a chrome lined barrel. You'll get more velocity(shoot flatter) and the 1x8 twist will handle a wide variety of bullet weights well. You will be giving up maneuverability though as your gun will be much more front heavy.
CamoToe1 is offline  
Steel_Talon Likes This 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Free floating a barrel and glass bedding a barrel mountainskytop General Rifle Discussion 3 12-15-2012 07:19 PM
Any Thoughts On Suppressor Length In Relation To Barrel Length & Accuracy? ryevick 1911 Forum 9 10-19-2012 01:19 AM
old ? with a twist .308 and barrel length,velocity,accuracy powg General Rifle Discussion 2 07-11-2010 05:04 PM
new sw 686 2 1/2 barrel accuracy Woodsman Revolver Handguns 5 02-07-2009 12:58 AM
need help! lost accuracy free floating barrel p5200 Gunsmithing Forum 7 06-04-2008 07:08 PM



Newest Threads