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riceone
Joined: Aug 22 2003
Posts: 86
Location: Mississippi Delta
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 Posted: Sat Oct 29, 2011 7:10 pm Post subject: Vent Hole |
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Today as I was working on a cut away 99 for Doss I milled the front 1/4 of the bolt head away and in the groove for the ejector I found a vent hole that extended to right where the firing pin protrudes through the front of the bolt face. It would exhaust right into the vent hole on top of the receiver. I'm probably the only one who did not know it was there.
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Francis C. Allan
Joined: Oct 04 2006
Posts: 257
Location: 20 Courtney Pl., Palm Coast, FL 32137
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| Posted: Sun Oct 30, 2011 11:47 am Post subject: I didn't either |
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You are not the only one. I may have noticed it years ago but sure forgot about it until you mentioned it and I had to go look again!!!! Thanks for pointing it out.
Frank
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Francis C. Allan
20Courtney Place
Palm Coast, FL 32137
(386) 445-4225 |
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gwsiii
Joined: Aug 21 2003
Posts: 2240
Location: Hayden, AL
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| Posted: Mon Oct 31, 2011 7:16 am Post subject: vent |
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It's one of those things you see, realize what it is, and then forget to bring it up. If we started a recorder at every 'get together' and transcribed the printable parts to read over and act one.....But if a bullfrog had wings...
I would be interested in trying to create a rupture primer scenario on a bench and see if we could catch the results of the diffusion of the gases through the vent hole and back of the bolt at safety. Is that something we could actually create?
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oopy38
Joined: Aug 27 2003
Posts: 80
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| Posted: Mon Oct 31, 2011 9:32 pm Post subject: How To Rupture A Primer? |
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| I believe if a firing pin tip was lengthened, it would pierce the primer for the same results. Just guessing as I am not a machinist. Or perhaps just glue a small rifle primer in the primer pocket and when hit by the regular length firing pin, the pressure would blow the entire primer out. Again, just a guess. |
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DEFUC
Joined: Aug 17 2004
Posts: 200
Location: UP of michigan
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| Posted: Fri Nov 04, 2011 12:42 pm Post subject: |
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| guess that was something Id never really looked at ,til now, or if I had Id said thats cool,well engineered and promptly forgot,so either way I know it again now...A recorder at get togethers might be a bad idea,Trey,LOL...hate for them to surface when Shannon is up for "Dare I say???? A Cabinet post!!!!" . or something |
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