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 January 9, 2006, 05:12 PM #1 1inthechamber Senior Member   Join Date: November 18, 2005 Posts: 299 Primers & Pressure Just out of curiousity, how many pounds of pressure does it take for the primer to ignite?
 January 10, 2006, 06:05 AM #2 WESHOOT2 Senior Member   Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,270 not many Primers can "ignite" from static. WARNING: PRIMERS WILL EXPLODE __________________ . "all my ammo is mostly retired factory ammo"
 January 11, 2006, 12:59 PM #3 jclaude Senior Member   Join Date: January 3, 2006 Location: Coastal North Carolina Posts: 157 Pounds of pressure to ignite primer? PHP Code: ``` Just out of curiousity, how many pounds of pressure does it take for the primer to ignite?  ``` Don't really understand the question. Could you, maybe, rephrase it?
 January 11, 2006, 01:13 PM #4 Avizpls Senior Member   Join Date: November 9, 2004 Posts: 774 he means: What kind of inpact force from the firing pin is required before the primer will 'go off'
 January 11, 2006, 01:33 PM #5 Mal H Staff   Join Date: March 20, 1999 Location: Somewhere in the woods of Northern Virginia Posts: 15,437 It's not totally a question of pounds (force), a primer requires a certain speed of impact as well, and I don't know exactly how fast that speed needs to be. To illustrate, if you slowly push a firing pin shaped object into a primer in a normally primed case, it will not go off, the primer pellet will crush and the pin will eventually pierce the primer cup. In reality, you have exerted considerably more force on the primer than a hammer/firing pin does. Yet with the speed of the hammer coming into play the primer will go off. So the bottom line answer to the original question is - it depends.
 January 11, 2006, 01:51 PM #6 Avizpls Senior Member   Join Date: November 9, 2004 Posts: 774 but an impact force, or as I previously said: inpact, does involve speed to. I know what you mean. Its also considerably harder to set of a primer with a sharp Ice Pick than with a 1.5mm rounded pin punch
 January 11, 2006, 02:19 PM #7 Mal H Staff   Join Date: March 20, 1999 Location: Somewhere in the woods of Northern Virginia Posts: 15,437 Exactly - my reply was directed at the original poster, not you, even though it immediately followed your reply. 'Impact' is the correct word to use. But the speed required in the impact is a variable and is an unknown to me.
 January 11, 2006, 02:40 PM #8 Avizpls Senior Member   Join Date: November 9, 2004 Posts: 774 Sorry. Im going to see if this is somethig that I can use my resources of scientific equipment to actualy quantify a number.... We'll see.
 January 11, 2006, 06:17 PM #9 1inthechamber Senior Member   Join Date: November 18, 2005 Posts: 299 Thanks guys for the replies. Avizpls rephrased it better, so thanks Avizpls. It just popped into my head when I was looking over spent casings and unfired cartridges and wondered how much force or speed it took for the primer to go off. Thanks again.
 January 12, 2006, 12:07 AM #10 Avizpls Senior Member   Join Date: November 9, 2004 Posts: 774 Sorry to tease. I wont be able to do this

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