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Posted: 1/31/2010 5:29:57 PM EDT
| A friend of mine works in a machine shop, and we were discussing the idea of making some headspace gauges for .303 british. It headspaces on the rim, right? Thinking of a go/no go set, either aluminum or steel. With the thickness of the rim being where headspace matters , is the shamber critical at all? Our idea is to make the gauge whatever thickness necessary for the rim, and add a bit of metal to go into the chamber for stability-not necessarily cartridge length and shape, but cartridge dimension for whatever we do make. Would this idea work, and does anyone know what dimension the rim should be? Got the idea from a set of gauges I saw for sale for over $50, and they appeared to just be a metal disc with a clearance cut for the extractor. |
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You have the basic concept and method correct. You'll have to make at least two, GO and NO GO. You should be able to find the exact dimentions on line for both. They need to be steel and hardened to avoid deformation. Your friend is a machinist so he should understand the concept of a "Standard" for measuring/testing/gauging.
MLG |
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Being steel, yes. Being hardened.... not nearly as important. Its not a high use item and there should be ZERO stress on the gauge in use. I really wouldn't worry about hardening.
Be sure to bevel/chamfer the edges of the rim portion and make sure the rim recess in the chamber is clean. Dutch |
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I'd buy a set if you make some for 7.62x54r..I'll even sign a waiver..  Have you tried OkieGauges? I bought one of their "Field" gauges. |
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-would it be worth making a dozen or so sets to sell online No. Its worth it to make for your own use. or would it be too much of a liability issue/possible legal issues? Huh? What liability? What legal issue? This is what happens when you're paranoid at Big Brother... not that its a completely unfounded concern.. I figure we can get them made for $5 or so, lots of room for profit if worth the trouble. Firstly, making them for your own use is a whole world apart from making them commercially. Yesterday you couldn't spell headspace gauge maker and today you are one. You know nothing about what you're doing but you figure you can sell them online. Wrong. Stick to things you have experience and knowledge in.. which isn't headspace gauges. Here's something to think about: I'm a machinist. I have a nice shop at home. I wouldn't talk to you for five bucks let alone make a precision gauge of any kind for $5. But..ah..er.. I just gave you life advise for free so what do I know? 
Dutch |
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Quoted:
Quoted:
-would it be worth making a dozen or so sets to sell online No. Its worth it to make for your own use. or would it be too much of a liability issue/possible legal issues? Huh? What liability? What legal issue? This is what happens when you're paranoid at Big Brother... not that its a completely unfounded concern.. I figure we can get them made for $5 or so, lots of room for profit if worth the trouble. Firstly, making them for your own use is a whole world apart from making them commercially. Yesterday you couldn't spell headspace gauge maker and today you are one. You know nothing about what you're doing but you figure you can sell them online. Wrong. Stick to things you have experience and knowledge in.. which isn't headspace gauges. Here's something to think about: I'm a machinist. I have a nice shop at home. I wouldn't talk to you for five bucks let alone make a precision gauge of any kind for $5. But..ah..er.. I just gave you life advise for free so what do I know?
Dutch What does spelling have to do with knowing how to read measurements and transfer those measurements to a piece of metal? Also, you're a machinist. Good for you. You're also not the friend I was mentioning, and the $5 I mentioned was the cost of the metal to make a few. The poster above you mentioned selling them wouldn't be a good idea due to the liability concerns, the issue has been addressed. We won't be making them to sell, but might make some for personal use. |
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