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Long Range Hunting & Shooting
Reloading- What pressure signs do you stop at?
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<blockquote data-quote="Calvin45" data-source="post: 2757008" data-attributes="member: 109862"><p>Correct!</p><p></p><p>I've honestly come to disregard most primer signs and bolt face marks because I've had rifles that left marks from merely chambering a round and not firing it, and certainly I've had factory ammo leave ejector swipes…and primers aren't so absolute either though a blown one is obvious. </p><p></p><p>If and when I'm pushing the envelope in uncharted territory with a particular combo for which there isn't data, some things I've come to value, in addition to paying attention to the chrono, are my "one finger bolt lift" rule….if I can't EASILY lift the bolt using one finger, too hot. Might not catch very slight stiffness if just ham fistedly caveman handling the bolt open haha. I do still look at primer and headstamp signs of course, look for head separation signs…</p><p></p><p>The other big signs to me at least in some cartridges are excessive stretch and expansion. I take before and after measurements of case length and diameter at the web. Now some brass is much softer than others and will move more. I'm fine acknowledging that I do in fact load tougher brass to higher pressure <img class="smilie smilie--emoji" loading="lazy" alt="🤣" title="Rolling on the floor laughing :rofl:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f923.png" data-shortname=":rofl:" />. HOORAY FOR PETERSON! </p><p></p><p>And of course there's the matter of primer pocket longevity. The other day I tried prepping some 257 wby brass for development that had already been used in load workup for a failed combo experiment. Couldn't remember which one was the piece that had obviously pressured out way too far…until I tried seating a primer in one of my resized cases and it just fell back out! Only twice fired, no way that should happen <img class="smilie smilie--emoji" loading="lazy" alt="😬" title="Grimacing face :grimacing:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f62c.png" data-shortname=":grimacing:" /></p></blockquote><p></p>
[QUOTE="Calvin45, post: 2757008, member: 109862"] Correct! I’ve honestly come to disregard most primer signs and bolt face marks because I’ve had rifles that left marks from merely chambering a round and not firing it, and certainly I’ve had factory ammo leave ejector swipes…and primers aren’t so absolute either though a blown one is obvious. If and when I’m pushing the envelope in uncharted territory with a particular combo for which there isn’t data, some things I’ve come to value, in addition to paying attention to the chrono, are my “one finger bolt lift” rule….if I can’t EASILY lift the bolt using one finger, too hot. Might not catch very slight stiffness if just ham fistedly caveman handling the bolt open haha. I do still look at primer and headstamp signs of course, look for head separation signs… The other big signs to me at least in some cartridges are excessive stretch and expansion. I take before and after measurements of case length and diameter at the web. Now some brass is much softer than others and will move more. I’m fine acknowledging that I do in fact load tougher brass to higher pressure 🤣. HOORAY FOR PETERSON! And of course there’s the matter of primer pocket longevity. The other day I tried prepping some 257 wby brass for development that had already been used in load workup for a failed combo experiment. Couldn’t remember which one was the piece that had obviously pressured out way too far…until I tried seating a primer in one of my resized cases and it just fell back out! Only twice fired, no way that should happen 😬 [/QUOTE]
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Reloading- What pressure signs do you stop at?
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