Ar???

Jamie

Jamie

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so I think my 11.5" Barrel is done......after a pile of ammo...7/9k I can't get it to shoot better then 10" and thats at 25 meters!!!!....but the funny thing is it just went bad fast real fast with in the last 300rds...I will say I am not the best at keeping my AR Barrel clean,,,,but 10"????any thoughts??anyone want to sell me a real cheap 11.5 barrel:redface:


Jamie Barkwell
 
Two problems come to mind - your barrel is utterly too short to give your 55gr bullets the muzzle velocity they need to stabilize; and, your barrel has the wrong twist for the muzzle velocity of the bullets as fired.

Try shooting a barrel that is about twice as long, and you won't have either problem previously stated.

(PS you are rediscovering the "Blackhawk Down" Mogadishu M4 carbine phenomenon. Insufficient muzzle velocity and accuracy to knock down the attackers. )
 
Stevo said:
I believe he's saying his accuracy just went to s**t recently. Not that it was always that way.
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yep...when I first got it 2" at 100meters of the bench and rest.....

I would hate to see what it would do now that far out...lol


ammo AE 55gr or Winchester 55gr fmj

Jamie Barkwell
 
For me... I'd first check for play in the barrel where it connects to the upper, followed by play in the front sight.

Then I'd check for play in the front sight post and rear sight aperture; obviously checking the detachable handle if you have one for play.

10" does sound like a lot at 25m.

Give it a real good cleaning after the check then try again :)
 
agilent_one said:
Sound like your barrel has bit the dust. Was it chrome-lined or chromoly?
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dust??


its a flattop with no front sight or rear sight...everything is tight....


Jamie
 
maple_leaf_eh said:
Two problems come to mind - your barrel is utterly too short to give your 55gr bullets the muzzle velocity they need to stabilize; and, your barrel has the wrong twist for the muzzle velocity of the bullets as fired.

Try shooting a barrel that is about twice as long, and you won't have either problem previously stated.

(PS you are rediscovering the "Blackhawk Down" Mogadishu M4 carbine phenomenon. Insufficient muzzle velocity and accuracy to knock down the attackers. )
Click to expand...



That must be it Jamie. You've subcome to the evil-evil gun syndrome. You must stick to the 20" barrel evil gun or you will be doomed.LOL
 
Jamie said:
dust??


its a flattop with no front sight or rear sight...everything is tight....


Jamie
Click to expand...

"bit the dust" = figure of speech meaning "died."

Just curious as to the metallurgy of the barrel. 7K to 9k rounds seems pretty low. What make of barrel?
 
agilent_one said:
"bit the dust" = figure of speech meaning "died."

Just curious as to the metallurgy of the barrel. 7K to 9k rounds seems pretty low. What make of barrel?
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I read it wrong:redface: ...I thought you said a bit of dust.....good to much sun today...


JAmie Barkwell
 
Stupid question, but how's your flash hider?

Simple throat erosion shouldn't cause that much of a problem. Is your flash hider tight, been removed or replaced lately, of have you accidently damaged the crown?

If all else fails, take it off and try a few rounds.
 
Canuck223 said:
Stupid question, but how's your flash hider?

Simple throat erosion shouldn't cause that much of a problem. Is your flash hider tight, been removed or replaced lately, of have you accidently damaged the crown?

If all else fails, take it off and try a few rounds.
Click to expand...

yes it has been off.....mmm I will have a look ASAP....its tight but maybe...just maybe.....its a R33 Flashider everthing else work awesome as allways.....no FTF or jams....just shoot like ####...



Jamie Barkwell
 
A match barrel is usually shot out at around 5,000 rnds. Check throat erosion first. I'll bet shooting fast and a lot has cooked the leading edges of the rifling and as said before your barrel is finished. New barrel time bud.

Scott
Dycor Special Services
 
but their fighting schedule is based on 30rnd mags and wether it was in full auto or just burst shooting. somehow i think our 5 rounds intense schedule isn't quite that intense.
 
the Eotech is good.....its now mounted on Reapers upper and I won match with it today...

the whole gun is Armailte no franken AR's at my place ....yet...


I will try to Clean the bore real good take off the FH and have a look at the crown....then.....if that don.t work...barrel time


Jamie Barkwell
 
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