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Old 04-15-2006, 02:05 PM   #1
 
Join Date: Jun 2004
Posts: 1,346
Hand guard problem

I'm pretty sure I have a problem with too much contact between the rear hand guard and the barrel. POI drops about 3" at 100yards after the rifle gets warmed up. The last time I disassembled the rifle, I noticed wood fibers clinging to the rough edge of a stamping on the top of the barrel so I figure it's got to be making contact there.

What I'm wondering is how I know how much wood to remove. It's not like I can squeeze my eyeball in between the wood and barrel.
FishInABarrel is offline  
Old 04-15-2006, 04:52 PM   #2
 
Join Date: May 2003
Posts: 4,371
If it's very tight inside the lower band , that's not really a bad thing . However , if the handguard is pressing against the reciever . It would be a good idea to remove enough to leave a gap of about thirty or forty thousanths between wood and metal . That , you will be able to see .

Jack
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Old 04-15-2006, 05:37 PM   #3
 
Join Date: Oct 2004
Posts: 195
Take enough off that you can slide a piece of notebook paper strip between the barrel and guard,Do this the full length of the handguard. With the upper handguard and band removed, mine rocks on the clip alone and You'll get real good at taking the guard off without removing the front end. My Boyds guard was pretty heavy in that area.
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Old 04-18-2006, 07:34 PM   #4
 
Join Date: Jun 2004
Posts: 1,346
I'm not sure what (if anything) I should do here.

Is there really any point to removing the wood so it doesn't hug the barrel? It seems like that's how it's designed to go together. There's 0.015" clearance between the receiver and the upper hand guard.

What else might be causing my groups to drop like this?
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Old 04-19-2006, 02:43 AM   #5
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You need a little more than .015, more on the order of a 1/16th of an inch. Also, make sure the front handguard isn't being pinned against the lower band by the Gas-Cylinder. There should be a gap there too. Enough to where when you hold the rifle up you can see a thin line of light between the front handguard ferrule and the rear of the Gas-Cylinder.
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