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The Range
Rifle & Shotgun Discussion
AR being uncooperative
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<blockquote data-quote="lasher" data-source="post: 3005318" data-attributes="member: 40522"><p>i have found, recentlly, several gas tubes that are semi blocked, for lack of a better term. i now use a piece of stripped 12 gauge copper romex and feed it in and out of the tubes several times. after install i put the nozzle of a hornady one shot can into the tube on the receiver side, turn muzzle down and spray, if i get one shot out the muzzle it's usually good to go. i've had to make several gas ports larger on shorter barrels because i'm using much faster powder, i use a #43 wire bit for that. 3/32nds would probably require an adjustable block. i run a dowel down the bore to stop the bit tip from biting the other side, put on drill press use moderately light downward pressure and basically let the bit pull it's way thru. also check to see if the tube port is obscured by the block, there have been tales of the tube port not aligning with the block port, i only use set screw blocks so it's easy to check after install into the block. be sure the gas rings on the bolt are staggered where none of the gaps line up.</p></blockquote><p></p>
[QUOTE="lasher, post: 3005318, member: 40522"] i have found, recentlly, several gas tubes that are semi blocked, for lack of a better term. i now use a piece of stripped 12 gauge copper romex and feed it in and out of the tubes several times. after install i put the nozzle of a hornady one shot can into the tube on the receiver side, turn muzzle down and spray, if i get one shot out the muzzle it's usually good to go. i've had to make several gas ports larger on shorter barrels because i'm using much faster powder, i use a #43 wire bit for that. 3/32nds would probably require an adjustable block. i run a dowel down the bore to stop the bit tip from biting the other side, put on drill press use moderately light downward pressure and basically let the bit pull it's way thru. also check to see if the tube port is obscured by the block, there have been tales of the tube port not aligning with the block port, i only use set screw blocks so it's easy to check after install into the block. be sure the gas rings on the bolt are staggered where none of the gaps line up. [/QUOTE]
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AR being uncooperative
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