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Rifles, Reloading, Optics, Equipment
Reloading
Strange occurrence at the range today with handloads
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<blockquote data-quote="Dean2" data-source="post: 3027272" data-attributes="member: 26077"><p>What you had was a Click-Boom. There are a number of potential causes, too weak a primer, as in using a CCI 250 instead of a Fed 215, big issue with large capacity cases using hard to ignite powder, or too small a fill percentage causing a powder position issue, or too low a powder charge for the case capacity. Any one of these can cause some serious problems because what you end up with is a poor ignition of the powder, as in it starts to light off, but doesn't fully light all at one time, and this results in the bullet staying in place far longer than it should, generating a large pressure spike. In its worst form you will find the the round doesn't go off at all but the primer has gone off and the powder is lumpy and a hard mass inside the case, almost like it melted then hardened, which is what it actually did.</p><p></p><p>My last comment, though not what you did, under loading or trying to make reduced recoil loads for over capacity cases like the 7 RUM, 257 Bee etc is a bad idea as this can also cause detonation, which results in the same pressure spike..</p></blockquote><p></p>
[QUOTE="Dean2, post: 3027272, member: 26077"] What you had was a Click-Boom. There are a number of potential causes, too weak a primer, as in using a CCI 250 instead of a Fed 215, big issue with large capacity cases using hard to ignite powder, or too small a fill percentage causing a powder position issue, or too low a powder charge for the case capacity. Any one of these can cause some serious problems because what you end up with is a poor ignition of the powder, as in it starts to light off, but doesn't fully light all at one time, and this results in the bullet staying in place far longer than it should, generating a large pressure spike. In its worst form you will find the the round doesn't go off at all but the primer has gone off and the powder is lumpy and a hard mass inside the case, almost like it melted then hardened, which is what it actually did. My last comment, though not what you did, under loading or trying to make reduced recoil loads for over capacity cases like the 7 RUM, 257 Bee etc is a bad idea as this can also cause detonation, which results in the same pressure spike.. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Strange occurrence at the range today with handloads
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