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Topic: Home built bolt action, Where will this end up?< Next Oldest | Next Newest >
heathydee Offline





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Posted: July 28 2008,19:13 QUOTE

Over the last few weeks I have been thinking about a home built single shot bolt action centerfire that can be made as simply as possible with the option to go a little further as time and enthusiasm permit. By this I mean turning it into a repeater with a detachable box magazine.
As it stands now my concept is to have a bolt handle which goes right through the bolt body . The root of the handle is to be squared off as is the protruding portion on the other side . These square projections will run in raceways in the receiver.  Detachable bolt head which will be machined similarly to a shell holder so as to do away with an extractor . Gas proof firing pin which is powered by a hammer at the rear of the receiver.
My initial thoughts were to make the bolt captive in the receiver . Comments by Deth502 in another thread persuaded me to go with an easily removable bolt .
I am sure that comments by Fuzzbean in another thread that I can no longer find, have influenced my thinking .

The picture shows what I am starting with . A piece of DOM tubing I am convinced is 4130 and a high tensile bolt that began its life in a commutator of a D77 traction motor. I have a box of these bolts and three feet of the tubing so I am not adverse to a bit of destructive testing  in the course of this built.
Let the fun commence!


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deth502 Offline





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Posted: July 28 2008,20:48 QUOTE

"bolt gun" literally!!!

wasnt trying to persuade you, just giving you my take on how id do it!!

gonna be watching this one. been wanting to build a bolt gun, but my last experience with trying to make something striker fired left ALOT to be desired. amof, its still sitting in the corner untill someday i feel like trying to work the trigger out again.

hammer fired sounds ALOT easier. and i love the idea of the slot in the back to keep it from firing out of battery.
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nevadablue Offline
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Posted: July 28 2008,21:17 QUOTE

Yes! :D bring on the bolts!

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Remember, it could well be that your only purpose in life is to serve as a warning to others.

OH, by the way... don't worry, we WIN, I read the BOOK! :)
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Charlie Online
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Posted: July 29 2008,08:16 QUOTE

I LIKE IT.

Go HealthyDee, you the man.

You need anything in the way of materials, let it be known.
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heathydee Offline





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Posted: July 29 2008,19:56 QUOTE

It took about an hour to turn the bolt down to .740" and drill a quarter inch hole . I used a standard length drill and came in from both ends and met in the middle. It is an easy slip fit in the receiver which measures .750"

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heathydee Offline





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Posted: July 29 2008,20:03 QUOTE

I cut a 60 degree center in the end that will be drilled and tapped for the bolt head to aid in setup when I have to drill it transversely for the bolt handle/locking lugs.

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kungfuli Offline





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Posted: July 30 2008,00:33 QUOTE

The rule is made in China?
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ossi Offline





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Posted: July 30 2008,13:47 QUOTE

If you are going to have it hammer fired by an internal hammer, you need to have the bolt non-rotating.
Unless of course there vill be an external hammer at the rear that you would cock before opening the bolt?


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Íssi Iceland
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heathydee Offline





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Posted: July 30 2008,17:23 QUOTE

Ossi.       The bolt will rotate and use an external hammer. Moving the bolt rearward will bring the hammer to about the 3/4 cock position , where the sear will enter a deep safety notch . The hammer will have to be pushed down below the floor of the receiver to fully cock the action .
Kungfuli.   Yes the rule is Chinese and so is the ammunition I believe.

I have cut a length of the tubing and cut the internal thread 7/8" x 14 . I have also roughly marked out the ejection port .I am up to about 2.5 hours machining time.


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ossi Offline





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Posted: July 31 2008,11:28 QUOTE

Tell us more about that ruler

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Íssi Iceland
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