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Rifles, Reloading, Optics, Equipment
Reloading
Pressure Signs with New Brass
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<blockquote data-quote="DUSTY NOGGIN" data-source="post: 1820113" data-attributes="member: 89550"><p>bolt action or semi ?? </p><p></p><p>over sizing can cause early signs... once the brass is fire formed , it can alleviate some of the signs you are seeing</p><p></p><p>compare your fire formed with one of the new cases , measure case base to shoulder on both .. using a universal depriming tool get the primer out without changing the shape of the brass , while insuring that you do not measure the ejector opening mark on the back of the case</p><p>forget the .002 less shoulder bump for a minute and focus on the bolt closing feel while removing the firing pin and spring loaded ejector plunger , what ever that measurement is, is what i would size to during your this workup</p><p></p><p>your case volume measurement is certainly going to affect the pressure. but, i dont think it would push the pressure all the way to a starting load? do you know someone with quickload that can run both of those water differences , using your remington safe load as a base measurement </p><p></p><p>i would</p><p>remeasure lands , seat next batch at least 15 to 20 off if your bullet allows (verify jam isn't causing pressure) </p><p>clean thoroughly ( maybe your Remington trim length left carbon at the gap and your sb brass is longer ) ,</p><p>keep note of primer feel at next install , </p><p>remove pin and plunger from bolt and get exact measurement of chamber ,using a once fired case </p><p>verify your scale is accurate, with check weights</p><p>see if a 308 bullet will drop right in a once fired brass</p><p>measure once fired neck measurement , record measurement and compare next seated bullet of next batch</p><p>maybe use a lighter bullet to finish fire forming the new brass</p><p>and try again at starting load</p></blockquote><p></p>
[QUOTE="DUSTY NOGGIN, post: 1820113, member: 89550"] bolt action or semi ?? over sizing can cause early signs... once the brass is fire formed , it can alleviate some of the signs you are seeing compare your fire formed with one of the new cases , measure case base to shoulder on both .. using a universal depriming tool get the primer out without changing the shape of the brass , while insuring that you do not measure the ejector opening mark on the back of the case forget the .002 less shoulder bump for a minute and focus on the bolt closing feel while removing the firing pin and spring loaded ejector plunger , what ever that measurement is, is what i would size to during your this workup your case volume measurement is certainly going to affect the pressure. but, i dont think it would push the pressure all the way to a starting load? do you know someone with quickload that can run both of those water differences , using your remington safe load as a base measurement i would remeasure lands , seat next batch at least 15 to 20 off if your bullet allows (verify jam isn't causing pressure) clean thoroughly ( maybe your Remington trim length left carbon at the gap and your sb brass is longer ) , keep note of primer feel at next install , remove pin and plunger from bolt and get exact measurement of chamber ,using a once fired case verify your scale is accurate, with check weights see if a 308 bullet will drop right in a once fired brass measure once fired neck measurement , record measurement and compare next seated bullet of next batch maybe use a lighter bullet to finish fire forming the new brass and try again at starting load [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Pressure Signs with New Brass
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