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Rifles, Reloading, Optics, Equipment
Reloading
Help with misfires please
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<blockquote data-quote="MagnumManiac" data-source="post: 1002276" data-attributes="member: 10755"><p>I shoot a few thousand rounds a year myself in many different long range comps.</p><p>I own a Pressure Trace II system, there is nothing about pressure I don't know, whether it's S.S.E. or other so called pressure excursions.</p><p>I haven't used CCI primers for 20 years, they weren't the best back then, especially their benchrest primers. I use either Winchester or Federal primers, both standard and magnum in small and large rifle.</p><p>The plug of unburned powder is more than likely the cause of a faulty primer than the fact it was compressed. The internet has so many untested theories that anybody can have a theory that sounds reasonable and everyone believes it.</p><p>By the way, S.S.E. (Secondary Explosion Effect) has NEVER been duplicated in a lab, NEVER, so it is still just a theory. I have duplicated hang fires while using my pressure trace, no pressure spikes to be seen, none. Hang fires occur because the primer flash runs over a low density load of slow burning powder, very few granules are ignited initially, then after a short time the powder burns normally, this may be due to using a standard primer when a magnum primer should have been used in a large capacity case.</p><p>There is also another phenomenon that has been seen on the pressure trace, not by me, that some extremely overbore cartridges show a second very high pressure spike just as the bullet LEAVES the barrel. Instead of dropping to zero pressure, the pressure jumps to 80, 000psi at the chamber, why? No body knows.</p><p></p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1002276, member: 10755"] I shoot a few thousand rounds a year myself in many different long range comps. I own a Pressure Trace II system, there is nothing about pressure I don't know, whether it's S.S.E. or other so called pressure excursions. I haven't used CCI primers for 20 years, they weren't the best back then, especially their benchrest primers. I use either Winchester or Federal primers, both standard and magnum in small and large rifle. The plug of unburned powder is more than likely the cause of a faulty primer than the fact it was compressed. The internet has so many untested theories that anybody can have a theory that sounds reasonable and everyone believes it. By the way, S.S.E. (Secondary Explosion Effect) has NEVER been duplicated in a lab, NEVER, so it is still just a theory. I have duplicated hang fires while using my pressure trace, no pressure spikes to be seen, none. Hang fires occur because the primer flash runs over a low density load of slow burning powder, very few granules are ignited initially, then after a short time the powder burns normally, this may be due to using a standard primer when a magnum primer should have been used in a large capacity case. There is also another phenomenon that has been seen on the pressure trace, not by me, that some extremely overbore cartridges show a second very high pressure spike just as the bullet LEAVES the barrel. Instead of dropping to zero pressure, the pressure jumps to 80, 000psi at the chamber, why? No body knows. Cheers. gun) [/QUOTE]
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Reloading
Help with misfires please
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