Is This A Misprint?
Quote from Reloader on December 17, 2016, 2:30 pmThis past fall I purchased a XL650 and am thrilled with it. Some time ago I noticed this in the November 2015 instruction manual.
"Never attempt to deprime live primers - eventually one will go off. When it does it will detonate the others in the spent primer cup."
Surely this is a misprint.
This past fall I purchased a XL650 and am thrilled with it. Some time ago I noticed this in the November 2015 instruction manual.
"Never attempt to deprime live primers - eventually one will go off. When it does it will detonate the others in the spent primer cup."
Surely this is a misprint.
Quote from Reloader on December 17, 2016, 5:24 pmIf you think about it, no, it is not a misprint. I have never seen it happen. But it is a good rule of thumb for all reloading.
If a person had a bunch they wanted to do, and they managed to safely get part way though. Then one went off unexpectedly. The fire from the primer may shoot down into the cup and set the others off. You could also have a reaction spread to live primers in the primer feeder. People have had primers go off there. Not a pretty sight. Operators of the equipment often report being deaf from the explosion.
If you think about it, no, it is not a misprint. I have never seen it happen. But it is a good rule of thumb for all reloading.
If a person had a bunch they wanted to do, and they managed to safely get part way though. Then one went off unexpectedly. The fire from the primer may shoot down into the cup and set the others off. You could also have a reaction spread to live primers in the primer feeder. People have had primers go off there. Not a pretty sight. Operators of the equipment often report being deaf from the explosion.
Quote from Reloader on December 18, 2016, 3:59 amThey are assuming that your not just depriming 1 live primer. Therefore you would have multiple live primers in the spent primer cup to detonate.
I thought it was stupid when I read it at first, (how could spent primers detonate)
They are assuming that your not just depriming 1 live primer. Therefore you would have multiple live primers in the spent primer cup to detonate.
I thought it was stupid when I read it at first, (how could spent primers detonate)
Quote from Reloader on December 18, 2016, 2:40 pmOK, I see your point. I did not think about having live primers in the spent primer cup which, indeed, would be foolish. I do deprime occasionally but it is always done on my old Lyman Spartan single stage press. An occasional deprime is necessary when I notice a finished round with a crack at its mouth (.45 acp) that occurred during belling to accept the bullet.
OK, I see your point. I did not think about having live primers in the spent primer cup which, indeed, would be foolish. I do deprime occasionally but it is always done on my old Lyman Spartan single stage press. An occasional deprime is necessary when I notice a finished round with a crack at its mouth (.45 acp) that occurred during belling to accept the bullet.
Quote from Reloader on December 19, 2016, 4:34 pmCorrect. This statement is for users who have loaded an incorrect primer, into a bunch of cases, and have the urge to deprime them all. When primers are manufactured, the anvil is not fully seated into the primer compound. This makes it safe to ship them. Once a primer is seated, the anvil is pressed onto the priming compound, "arming" the primer. this is what makes it dangerous to deprime live primers.
I know more than a few people who have deprimed a hundred or more live primers, then one ignites, sets off the other primers in the cup, with the shrapnel and blast you would find suprising. People have lost vision in their eyes, caused housefires, and generally regretted their actions instantly.
Correct. This statement is for users who have loaded an incorrect primer, into a bunch of cases, and have the urge to deprime them all. When primers are manufactured, the anvil is not fully seated into the primer compound. This makes it safe to ship them. Once a primer is seated, the anvil is pressed onto the priming compound, "arming" the primer. this is what makes it dangerous to deprime live primers.
I know more than a few people who have deprimed a hundred or more live primers, then one ignites, sets off the other primers in the cup, with the shrapnel and blast you would find suprising. People have lost vision in their eyes, caused housefires, and generally regretted their actions instantly.