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Rifles, Reloading, Optics, Equipment
Reloading
1st time pressure test
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<blockquote data-quote="MagnumManiac" data-source="post: 1485900" data-attributes="member: 10755"><p>All rifles differ enough, even when using the same reamer, that you cannot assume 2 rifles will digest the same charges.</p><p>I have 2 barrels chambered within .001" of each other running 215's, one can digest 77gr H1000, the other can take 78gr. If I use 78gr in the 26" barrel, it locks the bolt and has ejector wipes pretty badly. Velocity goes up to over 3000fps with that 1 grain increase. Pressure is in excess of 70,000psi.</p><p></p><p>I have recently run into a pressure issue using a load that was safe in new unfired brass that showed excess pressure in the same once fired brass. Pressure was way above normal, primers very flat, ejector marks and swollen primer pockets.</p><p>So, when switching to once fired, if the load was near/at max pressure, it can go over with once fired brass, just keep this in mind.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1485900, member: 10755"] All rifles differ enough, even when using the same reamer, that you cannot assume 2 rifles will digest the same charges. I have 2 barrels chambered within .001” of each other running 215’s, one can digest 77gr H1000, the other can take 78gr. If I use 78gr in the 26” barrel, it locks the bolt and has ejector wipes pretty badly. Velocity goes up to over 3000fps with that 1 grain increase. Pressure is in excess of 70,000psi. I have recently run into a pressure issue using a load that was safe in new unfired brass that showed excess pressure in the same once fired brass. Pressure was way above normal, primers very flat, ejector marks and swollen primer pockets. So, when switching to once fired, if the load was near/at max pressure, it can go over with once fired brass, just keep this in mind. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
1st time pressure test
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