User Panel
User Panel
User Panel
|
Posted: 5/23/2015 10:57:04 AM EDT
[#1]
If he will be using 62gr pretty regularly, I'd go with a 1:7 or 1:8. Check out Faxon firearms. For the $$ they are hard to beat. DD, BCM, Aero, Colt and most of the other big names also have great barrels. All will have offerings well under the $1000 mark
|
|
|
|
Posted: 5/23/2015 11:58:32 AM EDT
[#2]
BHW and Green Mountain are also great barrels.
Honestly with that ammo 2 MOA is standard. |
|
|
|
Posted: 5/23/2015 12:40:31 PM EDT
[#3]
Change the ammo, not the barrel.
|
|
|
|
Posted: 5/23/2015 2:52:38 PM EDT
[#4]
Quote HistoryQuoted:
Change the ammo, not the barrel. ^^^this. For green tip the groups you were getting were about what the ammo is capable of. Try some match ammo before you give up on the barrel. |
|
|
|
Posted: 5/23/2015 7:30:36 PM EDT
[#5]
Quote HistoryQuoted:
^^^this. For green tip the groups you were getting were about what the ammo is capable of. Try some match ammo before you give up on the barrel. Quote HistoryQuoted:
Quoted:
Change the ammo, not the barrel. ^^^this. For green tip the groups you were getting were about what the ammo is capable of. Try some match ammo before you give up on the barrel. I agree as well. See if you can find some Hornady or Federal match ammo and shoot it from a rest to see what it can actually do before you scrap that barrel. People have unrealistic expectations of barrel accuracy, and like has already been said, that ammo you're using is good for 2-3 MOA. |
|
|
|
Posted: 5/23/2015 8:05:45 PM EDT
[#6]
Quote HistoryQuoted: Change the ammo, not the barrel. |
|
|
|
Posted: 5/23/2015 8:15:48 PM EDT
[#7]
Quote HistoryQuoted:
Change the ammo, not the barrel. |
|
|
|
Posted: 5/23/2015 8:46:17 PM EDT
[#8]
Quote HistoryQuoted:
Change the ammo, not the barrel. Just incase it hasn't been said yet 
|
|
|
|
Posted: 5/23/2015 8:47:54 PM EDT
[#9]
I have found that your typical rack grade military type barrel (in good condition) is quite accurate with match ammo. I use Hornady steel match 75 grain and Prvi Partizan match 75 grain and have gotten 1.5 MOA from an old Colt A2 with an unknown round count. Your typical ball load (XM193 or XM855) will get around 3 MOA, as you've experienced.
If you have a 1/9 twist, you may want to try the 69 grain Prvi Partizan match load. At around 50 cents a round, it doesn't break the bank, and accuracy should be a lot better than the ball ammo you've been using. ETA: I believe Molon does some of his accuracy tests with a standard colt rifle with a free floated barrel, and has gotten under a minute with some of the premium ammo he's tested. |
|
|
|
Posted: 5/23/2015 8:53:39 PM EDT
[#10]
Quote HistoryQuoted:
Change the ammo, not the barrel. I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. |
|
|
|
Posted: 5/23/2015 9:35:08 PM EDT
[#11]
Rainier Arms has some good barrels that won't break the bank
|
|
|
|
Posted: 5/24/2015 2:16:24 AM EDT
[#12]
Years ago when most vehicles were carbureted a lot of cars had their carbs tinkered with or even replaced when the real issue was electrical in nature.
Before replacing "parts" it might pay to buy some factory ammunition known for accuracy (labeled match or varmint for example) in various bullet weights and test. Competently handloaded ammo using quality bullets and checked for run-out may work as well to establish what your barrel is capable of. This will give you a base-line to gauge the performance of the ammo you regularly shoot. Some ammo just will not do much better than what you describe. |
|
|
|
Posted: 5/24/2015 3:03:54 AM EDT
[#13]
2-3 MOA is about par with M855
|
|
|
|
Posted: 5/24/2015 9:10:43 AM EDT
[#14]
Quote HistoryQuoted:
2-3 MOA is about par with M855 This. Actually, 1:9 is ideal for 62 grain bullets. The problem is most likely the ammo choice. Also, what sights/optic are you running, and are you shooting with a bipod, of off bags? Technique and optics make a big difference. Is the handguard free floated? |
|
|
|
Posted: 5/24/2015 10:00:21 AM EDT
[#15]
Quote HistoryQuoted:
This. Actually, 1:9 is ideal for 62 grain bullets. The problem is most likely the ammo choice. Also, what sights/optic are you running, and are you shooting with a bipod, of off bags? Technique and optics make a big difference. Is the handguard free floated? Quote HistoryQuoted:
Quoted:
2-3 MOA is about par with M855 This. Actually, 1:9 is ideal for 62 grain bullets. The problem is most likely the ammo choice. Also, what sights/optic are you running, and are you shooting with a bipod, of off bags? Technique and optics make a big difference. Is the handguard free floated? White Oak Armament. |
|
|
|
Posted: 5/24/2015 9:33:25 PM EDT
[#16]
Quote HistoryQuoted:
Change the ammo, not the barrel. Bada Bing, Bada Boom! This is the answer OP. You don't go out trying to get sub MOA groups using the most notoriously inaccurate, (3-4) MOA ammo ever produced for the AR-15/M16... You more than likely would have gotten groups half of what you did by simply using Federal XM-193 (55) grain bulk ammo... Hornady, Black Hills, PRVI Partisan, and Fiocchi in 60, 69, 75, and 77 grain loadings all shoot very, very well in my 1/7 twist barrels and even shoot good out a 1/9 Green Mountain barrel I have on a Mega build... Find out what ammo this barrel of yours likes best and shoot it for groups! |
|
|
|
Posted: 5/24/2015 9:44:30 PM EDT
[#17]
Quote HistoryQuoted:
I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. Quote HistoryQuoted:
Quoted:
Change the ammo, not the barrel. I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. What??? |
|
|
|
Posted: 5/24/2015 11:20:14 PM EDT
[#18]
If you are going to shoot surplus least try some good surplus ammo like some Razor Core
|
|
|
|
Posted: 5/25/2015 2:45:24 AM EDT
[#19]
Quote HistoryQuoted: What??? Quote HistoryQuoted: Quoted: Quoted: Change the ammo, not the barrel. I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. What??? He must have overheard a guy at the gun shop that used to be a water purification specialist back in the 'storm who was later forced in to a special forces sniper possition.... |
|
|
|
Posted: 5/25/2015 8:41:12 AM EDT
[#20]
Quote HistoryQuoted:
Change the ammo, not the barrel. If you put regular unleaded in a Ferrari, it will run poorly. If you want it to perform, feed it right. |
|
|
|
Posted: 5/25/2015 10:03:12 AM EDT
[#21]
Quote HistoryQuoted:
2-3 MOA is about par with M855 This, and 2 MOA sounds pretty dang good for M855 anyways. Changing the barrel isn't going to help at all if you're already getting 2 MOA. |
|
|
|
Posted: 5/25/2015 1:12:50 PM EDT
[#22]
Either 55gr or 62gr should be accurate out to at least 300 yards. The match ammo in the heavier weights are used (with the 1:7/1:8 twists) because they can withstand the longer distances that long range matches are shot at, i.e., ~600 yards, without becoming unstable or fragmenting in flight. They have more force at those ranges because they're heavier.
|
|
|
|
Posted: 5/25/2015 1:27:01 PM EDT
[#23]
Quote HistoryQuoted:
He must have overheard a guy at the gun shop that used to be a water purification specialist back in the 'storm who was later forced in to a special forces sniper possition.... Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Change the ammo, not the barrel. I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. What??? He must have overheard a guy at the gun shop that used to be a water purification specialist back in the 'storm who was later forced in to a special forces sniper possition.... Somethin like that. I feel much, much dumber after reading his comment. |
|
|
|
Posted: 5/25/2015 5:42:46 PM EDT
[#24]
Quote HistoryQuoted:
Somethin like that. I feel much, much dumber after reading his comment. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Quoted:
Change the ammo, not the barrel. I am going to go with this. 2 to 3 inch with green tip is actually very, very good. You may want to dimple the extension to tighten the barrel to the receiver. Supposed to cut down the spread by 15 to 30 percent. What??? He must have overheard a guy at the gun shop that used to be a water purification specialist back in the 'storm who was later forced in to a special forces sniper possition.... Somethin like that. I feel much, much dumber after reading his comment. Yep... not heard of that before... precision extension dimpling .... |
|
|
|
Posted: 5/25/2015 6:18:55 PM EDT
[#25]
Maybe try a box of match ammo first. Surplus ammo doesn't always give the best groups. Maybe get into reloading. You can potentially save money. .. potentially. Make accurate ammo, and me and my dad have found it to be a good way to spend time together as well! You can get single stage presses for pretty reasonable prices.
|
|
|
|
Posted: 5/25/2015 6:43:38 PM EDT
[#26]
I use Hornady steel match 75 grain I found the 62 grain green tip does not shoot well out of my 1/7 twist barrel. The Hornady listed above is what I use with good results. IMHO the 1/7 twist barrel likes heavier bullets. |
|
|
|
Posted: 5/31/2015 2:05:43 PM EDT
[#27]
So are you guys suggesting I try different ammo...lol... I need to check the twist on the barrel I have also.
|
|
|
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.
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.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
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.
