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Rifles, Reloading, Optics, Equipment
Reloading
Known Loads too hot now..why
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<blockquote data-quote="Pdvdh" data-source="post: 384629" data-attributes="member: 4191"><p>You didn't state if these cartridges were loaded back at the time of original load development, or if you loaded them up at a different cartridge reloading event. Are you using the same powder scale, brand and model number primers, the same brass casings, the same Lot of gun powder? Do you have a weight to calibrate your powder scale with and have you checked it's accuracy?</p><p></p><p>Change any of these components and if you were already operating near max you could begin to experience excessive pressure signs.</p><p></p><p>"<strong>Both loads showed giant shiny spots on the top of the brass and the bolt was hard to open</strong>." What's a giant shiny spot on the top of the brass mean? Are you describing a relatively small (compared to the entire case head) shiny spot on the case head from a bolt face plunger hole or extractor slot?</p><p></p><p>Hard bolt lift is subjective also. I've had everything from noticable stiff bolt lift to having to slam the bolt handle up with the palm of my hand - or it wouldn't budge. </p><p></p><p>If you're experiencing a huge increase in pressures, I'd check the powder scale for calibration first, after confirming you haven't switched any of the other components or swapped over to a new Lot and container of powder.</p><p></p><p>Report back after you figure it out?</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 384629, member: 4191"] You didn't state if these cartridges were loaded back at the time of original load development, or if you loaded them up at a different cartridge reloading event. Are you using the same powder scale, brand and model number primers, the same brass casings, the same Lot of gun powder? Do you have a weight to calibrate your powder scale with and have you checked it's accuracy? Change any of these components and if you were already operating near max you could begin to experience excessive pressure signs. "[B]Both loads showed giant shiny spots on the top of the brass and the bolt was hard to open[/B]." What's a giant shiny spot on the top of the brass mean? Are you describing a relatively small (compared to the entire case head) shiny spot on the case head from a bolt face plunger hole or extractor slot? Hard bolt lift is subjective also. I've had everything from noticable stiff bolt lift to having to slam the bolt handle up with the palm of my hand - or it wouldn't budge. If you're experiencing a huge increase in pressures, I'd check the powder scale for calibration first, after confirming you haven't switched any of the other components or swapped over to a new Lot and container of powder. Report back after you figure it out? [/QUOTE]
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Known Loads too hot now..why
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