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Rifles, Reloading, Optics, Equipment
Reloading
What is “powder bridging”?
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<blockquote data-quote="Mike 338" data-source="post: 1679269" data-attributes="member: 41338"><p>Not sure about in the case but powder in the hopper when reloading can bridge, or as you continue to use up powder as gravity drops it lower in the hopper, you get a clump of sticky powder somewhere up high in the hopper and and that bridge of sticky powder prevents gravity from feeding down to the lower portion of the hopper. I imagine a centerfire case is just a smaller hopper if you stand it upright. </p><p></p><p>I've disassembled cartridges and found sticky clumps of powder that I had to shake really hard to get all the powder to come out of the case. That's probably what they're referring to. I suppose a hard ball of stuck powder can significantly affect even burn characteristics.</p></blockquote><p></p>
[QUOTE="Mike 338, post: 1679269, member: 41338"] Not sure about in the case but powder in the hopper when reloading can bridge, or as you continue to use up powder as gravity drops it lower in the hopper, you get a clump of sticky powder somewhere up high in the hopper and and that bridge of sticky powder prevents gravity from feeding down to the lower portion of the hopper. I imagine a centerfire case is just a smaller hopper if you stand it upright. I've disassembled cartridges and found sticky clumps of powder that I had to shake really hard to get all the powder to come out of the case. That's probably what they're referring to. I suppose a hard ball of stuck powder can significantly affect even burn characteristics. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What is “powder bridging”?
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