| Bolt Page 3 - Return to Page 1 , Page 2 , or Jump to Page 4 , Page 5 |
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The next step was to drill the firing pin hole in the Bolt, which sounds easy but it has to be off centered, a stepped hole, and drilled from both side of the Bolt.
In the first picture I have the bolt centered in a 4 jaw chuck and I have applied layout dye to the face and sides, I then used a fired shell case and the TLAR method to mark the location of where the firing pin will be. In the Second picture the Bolt has been offset using 2 of the fingers of the chuck to about .208" to allow the firing pin hole to line up with the rim.
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Here I'm using a center drill and started the hole in the face of the Bolt.
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I choose to make the tip of the firing pin 3/32" and drilled a hole to match. You can see how it is off center in this picture.
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After Drilling the hole in the face of the Bolt to 3/32" I had to turn the Bolt around and set it up the exact same why so the 2 holes meet and line up.
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Here is the hole I drilled from the back side of the Bolt. I went with 3/16" for the main part of the pin. I though this was going to be hard but it turned out to be pretty simple the 2 holes lined up perfect.
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Next I had to make the actual Firing Pin. I started with a piece of 3/16 Drill Rod. I set the lathe up with a follower rest and turned the rod down slightly so it moved freely in the Bolt.
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Next I stepped the front portion down a bit for the firing pin spring.
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Then One more step for the tip of the pin.
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After that I used a bench grinder and grinded the tip to a point on 2 sides.
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| On the rear of the pin I used a Dremal and cutoff wheel to grind 2 flat sides, these will keep the Firing Pin from spinning in the Bolt. |
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