01-17-2010, 09:16
|
#1
|
|
Quiet Professional
Join Date: Jul 2005
Location: Lacey Washington
Posts: 737
|
Quote:
Originally Posted by fng13
I am using the burris P.E.P.R. Mount, it is a single mount with 2 built in rings like a larue spr mount. It does only tighten on the left, which I thought was probably causing the problem but I dont think that I am overtightening it because I am only hand tightening it, I tried to leave it a little loose but with no success.
As per the gunsmithing, this will probably end up being what I do, but I'm broke so the temptation is strong to try and remove the handguard and check it myself. I did not cross thread the barrel nut, I know that for sure. What does it mean to have the nut out of alignment?
Also, I am unsure how to find a good gunsmith. Gander mountain has one, but they charge a hefty sum, as I had looked at them doing it before. I have put a lot of money and time into this build and don't want to pass it off to just anyone.
Thanks again.
|
FNG:
One thing I forgot to ask.
Did you zero the upper using any iron sights? If you did zero it with a set of irons and had no problems with windage, something is wrong with the scope mounts or optic.
If you have a set of irons, slap them on and try to zero. If the same thing happens, the barrel was put on crooked.
You didn't have problems posting to this forum. What makes you think you will have any problems finding someone who is competent at making AR-15's? Come on guy...
Gene
|
|
Gene Econ is offline
|
|
|
01-17-2010, 09:32
|
#2
|
|
Guerrilla
Join Date: Jan 2004
Location: Nevada
Posts: 213
|
If it's that short of a barrel, you could always run a cleaning rod through it and just let it sit in the barrel far enough out that you can see if it's actually off kilter. I'd recommend having a gunsmith check it out as well.
|
|
TF Kilo is offline
|
|
|
01-17-2010, 11:32
|
#3
|
|
Quiet Professional
Join Date: Jun 2004
Location: Occupied Pineland
Posts: 4,701
|
PM sent.
__________________
A nation can survive its fools, and even the ambitious. But it cannot survive treason from within. An enemy at the gates is less formidable, for he is known and carries his banner openly. But the traitor moves amongst those within the gate freely, his sly whispers rustling through all the alleys, heard in the very halls of government itself. For the traitor appears not a traitor; he speaks in accents familiar to his victims, and he wears their face and their arguments, he appeals to the baseness that lies deep in the hearts of all men. He rots the soul of a nation, he works secretly and unknown in the night to undermine the pillars of the city, he infects the body politic so that it can no longer resist. A murderer is less to fear.
~ Marcus Tullius Cicero (42B.C)
|
|
Peregrino is offline
|
|
|
01-17-2010, 12:00
|
#4
|
|
Asset
Join Date: Dec 2009
Location: 1700ft. above sea level in Germany
Posts: 11
|
If your really trying to go the way of the gunsmith for the time being you could try a laser bore alignment and go from there. If it's still that bad I agree with everyone else either send the sight and mounts back for a new set or go to a gunsmith. Just my $.02
__________________
Lo, there do I see my Father..
Lo, there do I see my Mother
And my Sisters and my Brothers..
Lo, there do I see the line
Of my people back to the beginning..
They do bid me to take my place among them..
In the Halls of Valhalla,
Where the Brave may live forever.
I'd rather have one disease free woman than 72 virgins. My reasoning she's more fun...
|
|
Sabre2G is offline
|
|
|
01-17-2010, 12:24
|
#5
|
|
Guerrilla
Join Date: Apr 2009
Location: BFE PA
Posts: 449
|
Quote:
Originally Posted by Gene Econ
FNG:
One thing I forgot to ask.
Did you zero the upper using any iron sights? If you did zero it with a set of irons and had no problems with windage, something is wrong with the scope mounts or optic.
If you have a set of irons, slap them on and try to zero. If the same thing happens, the barrel was put on crooked.
You didn't have problems posting to this forum. What makes you think you will have any problems finding someone who is competent at making AR-15's? Come on guy...
Gene
|
I had gotten magpul mbus sights and did sight them in at the same time as the scope. I did have to adjust the windage to the right. However I did not use all of the adjustment. There is 15-20 "clicks" left on the right adjustment, I dont know what that transfers to, but looking at the knob it seems to be 1/4 turns. It is easy to see that the sight is not centered by looking at it in position to the base of the sight. Would this be indicative of poor barrel alignment?
I am still confused how I would have got the barrel out of alignment. It looks strait and was never taken out of the notch in the upper. This upper is from a stag arms model 1, with a 16in barrel. I had an eotech xps2 on there before I put the new rail system on and had no problems zeroing that. I understand though that an electronic optic probably has a greater level of adjustment.
I don't have a camera other than my cell phone but I'll try and borrow one so that I can post pics.
As per finding a gun smith, I was thinking of finding one locally. I have never taken anything to one before, so I didn't know what to look for. This has been corrected.
Thanks
__________________
Vincit qui se vincit
|
|
fng13 is offline
|
|
|
01-17-2010, 20:39
|
#6
|
|
Quiet Professional
Join Date: Jan 2004
Location: Fayetteville NC
Posts: 3,533
|
Stick a cleaning rod down the barrel so that 12 to 18 inches or more is sticking out of the the muzzle, That will show the displacement. Understand this, 60 moa equal ONE degree. Without a good, and I mean good, reference it is hard to see less than one degree of displacement in barrel. Your scope probably has about 40 moa adjustment. That means about 2/3s of a degree.
You stated that you had your weapon on its side as you took off the old barrel nut. That means that the barrel was unsupported, whether it was take out of the notch or not, the barrel probably sagged just a bit. That is all it takes, that just a bit.
My two cents. 
__________________
Hold Hard guys
Rick B.
Knowledge is knowing a tomato is a fruit.
Wisdom is knowing it is great on a hamburger but not so great sticking one up your ass.
Author - Richard. 
Experience is what you get right after you need it.
Author unknown. 
|
|
longrange1947 is offline
|
|
|
01-17-2010, 22:22
|
#7
|
|
Quiet Professional
Join Date: Jan 2004
Location: LA
Posts: 1,653
|
Quote:
Originally Posted by longrange1947
My two cents. |
ROTFLMAO! Oh that I had that drawing interest from when I first met this one...
__________________
Somewhere a True Believer is training to kill you. He is training with minimal food or water, in austere conditions, training day and night. The only thing clean on him is his weapon and he made his web gear. He doesn't worry about what workout to do - his ruck weighs what it weighs, his runs end when the enemy stops chasing him. This True Believer is not concerned about 'how hard it is;' he knows either he wins or dies. He doesn't go home at 17:00, he is home.
He knows only The Cause.
Still want to quit?
|
|
NousDefionsDoc is offline
|
|
|
01-18-2010, 00:03
|
#8
|
|
Guerrilla
Join Date: Apr 2009
Location: BFE PA
Posts: 449
|
Quote:
Originally Posted by longrange1947
Stick a cleaning rod down the barrel so that 12 to 18 inches or more is sticking out of the the muzzle, That will show the displacement. Understand this, 60 moa equal ONE degree. Without a good, and I mean good, reference it is hard to see less than one degree of displacement in barrel. Your scope probably has about 40 moa adjustment. That means about 2/3s of a degree.
You stated that you had your weapon on its side as you took off the old barrel nut. That means that the barrel was unsupported, whether it was take out of the notch or not, the barrel probably sagged just a bit. That is all it takes, that just a bit.
My two cents. |
Then I'm sure thats what happened. I may try to fix this myself. Will the barrel maintain alignment if i simply finger tighten the barrel nut on? I am using "Blox Worx" blocks, that hold the upper receiver pinched inbetween them so that the receiver doesn't get bent. So I don't want to torque on the barrel until it is correctly in the vice. Maybe tighten it a little then put it in the vice? How can I ensure proper barrel alignment? Without a special tool?
Thanks,
Fng
__________________
Vincit qui se vincit
|
|
fng13 is offline
|
|
|
01-18-2010, 08:35
|
#9
|
|
Quiet Professional
Join Date: Jan 2004
Location: Free Pineland
Posts: 24,816
|
I had a gunsmith one time tell me to leave gunsmithing to gunsmiths.
At some point, it will cost more to fix the mess than to have paid to do it right the first time.
It always looks so easy when I watch him do it.
TR
__________________
"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat." - President Theodore Roosevelt, 1910
De Oppresso Liber 01/20/2025
|
|
The Reaper is offline
|
|
|
01-18-2010, 09:17
|
#10
|
|
Quiet Professional
Join Date: Dec 2004
Location: Nashville
Posts: 956
|
I agree.
I do some lower level gunsmithing at home, having taken a course, but all the really critical stuff I pay for a pro.
At home I've done Cosmetic stuff with Stock base metal scopes.Mag well polishing, etc. Barrel replacement, Recoil reducers hole tapping for scopes and the like do to the Smith.
__________________
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson
To compel a man to subsidize with his taxes the propagation of ideas which he disbelieves and abhors is sinful and tyrannical.
Thomas Jefferson
|
|
Blitzzz (RIP) is offline
|
|
|
01-18-2010, 17:59
|
#11
|
|
Guerrilla
Join Date: Apr 2009
Location: BFE PA
Posts: 449
|
fixed
Thanks for all of the advice and help. I was able to correct the problem today after talking to a recommended gunsmith. The gunsmith felt that it was probably that I had the handguard on slightly crooked and that because of this slight difference between the handguard and the receiver I was shooting to the left. To correct this problem I completely removed the handguard, barrel nut, and barrel. When reinstalling the barrel nut I checked to make sure I had more precisely ligned it up with the gas tube port. Then when installing the handguard to the nut I took care to lign it up with the receiver as closely as possible using a straight edge.
When sighting it in, it shot to the right. Brought it left and down and wuah-lah fixed.
Thanks again.
Fng
__________________
Vincit qui se vincit
|
|
fng13 is offline
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
|
| Thread Tools |
|
|
| Display Modes |
 Hybrid Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 15:43.
|
|
|
