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Posted: 8/7/2004 10:07:32 PM EDT
| I have a 14.5 inch barreled Bushy that has a new bolt and carrier in it and the gas key was peened at the factory. I started having some FTF problems today and upon taking it apart noticed the gas key had come loose. I tightened it down and re-peened the key. Hopefully it will stay tight. Anyone else experience this kind of thing? |
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Back 30 years ago we didn't have some of the chemical thread locking chem's we do now. So for the carrier key screws, this is how I would make sure they stayed tight. After initial tightening. I'd mark each screw head with a scratch awl to coincide with an adjacent key surface area where there was lots of steel to peen (like the area between the 2 screws). Then I'd remove the screws and with a jeweler's very small triangular file, file a little "v-notch" in the edge of screw's head where I had marked it (usually in two places around the circumfrence). Then when the screws were re-instaled into their original positions, I'd peen the adjacent key material into the little "valley" I had filed with a center punch. This allows material to actually "flow" into this notch and physically prevent the screw from ever lossening, vs the "crimp" method of many factory installations that only serves to make the hole smaller so the screw can not back-out all the way on its own after it loosenes. |
| At first I thought it was the ammo (American Eagle 55gr.). I pulled the bolt and noticed it was really dry. The Militec lube I have been using doesnt seem to hold up under extended firing (600 rds yesterday). That's when I noticed the loose gas key. Hopefully, after the peening it will stay tight. |
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