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Rifles, Reloading, Optics, Equipment
Reloading
Ramshot Magnum vs. barrel life
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<blockquote data-quote="ss7mm" data-source="post: 94318" data-attributes="member: 5"><p>no.1 whitetail:</p><p></p><p>I find this very interesting as I really enjoy internal and external ballistics, although I don't have any exotic testing equipment and just some varied software.</p><p></p><p>In reference to your statement:</p><p> [ QUOTE ]</p><p> </p><p>the point where you guys are wrong is this peak chamber pressure thing.peak pressure occurs getting the bullet started. by this i mean getting the bullet fully engraved into the rifling.i don't know what it takes to start the bullet moving and i agree it's different for bullets just touching, jammed into the lands, or way off the lands. but the peak pressure occurs getting the full length of the bearing surface engraved into the rifling.once it is completely engraved in the rifling it starts accellerating very fast and chamber pressure goes down.peak pressure is not 3 or 4 inches down the barrel </p><p></p><p>[/ QUOTE ] </p><p></p><p>In playing with my QuickLoad software and also in looking at the pressure trace equipment on the RSI site, and a few other spots, can you please refer me to the data, or sources, where you have found the above to be the case. I look and look but it seems to me that the traces done with the RSI strain gage and related equipment and software seems to agree with what my QuickLoad software tells me and that is in reference to the distance down the barrel the bullet has traveled when peak chamber pressure occurs.</p><p></p><p>I would like to add your documented data to my data base but I can't find where you have obtained your data or who has done the testing. Can you list it so I can read it, as I would find this very interesting.</p><p></p><p>Everything I find says that it takes far less than your stated pressure to initiate bullet travel and get the bullet fully into the bore, so if you could, please list where your pressure figures are documented and or proven so I can read about it.</p><p></p><p>Also one other question. You stated that </p><p> [ QUOTE ]</p><p> the pressure builds up to 50 or 65k to get the bullet started </p><p></p><p>[/ QUOTE ] </p><p></p><p>According to your data and tests what would happen if the maximum pressure was only, say, 35,000 psi ?? Just curious since your data seems to document that it takes 50,000-65,000 psi to get the bullet started.</p><p></p><p></p><p>Thanks for any pertinent data you can provide.</p></blockquote><p></p>
[QUOTE="ss7mm, post: 94318, member: 5"] no.1 whitetail: I find this very interesting as I really enjoy internal and external ballistics, although I don’t have any exotic testing equipment and just some varied software. In reference to your statement: [ QUOTE ] the point where you guys are wrong is this peak chamber pressure thing.peak pressure occurs getting the bullet started. by this i mean getting the bullet fully engraved into the rifling.i don't know what it takes to start the bullet moving and i agree it's different for bullets just touching, jammed into the lands, or way off the lands. but the peak pressure occurs getting the full length of the bearing surface engraved into the rifling.once it is completely engraved in the rifling it starts accellerating very fast and chamber pressure goes down.peak pressure is not 3 or 4 inches down the barrel [/ QUOTE ] In playing with my QuickLoad software and also in looking at the pressure trace equipment on the RSI site, and a few other spots, can you please refer me to the data, or sources, where you have found the above to be the case. I look and look but it seems to me that the traces done with the RSI strain gage and related equipment and software seems to agree with what my QuickLoad software tells me and that is in reference to the distance down the barrel the bullet has traveled when peak chamber pressure occurs. I would like to add your documented data to my data base but I can’t find where you have obtained your data or who has done the testing. Can you list it so I can read it, as I would find this very interesting. Everything I find says that it takes far less than your stated pressure to initiate bullet travel and get the bullet fully into the bore, so if you could, please list where your pressure figures are documented and or proven so I can read about it. Also one other question. You stated that [ QUOTE ] the pressure builds up to 50 or 65k to get the bullet started [/ QUOTE ] According to your data and tests what would happen if the maximum pressure was only, say, 35,000 psi ?? Just curious since your data seems to document that it takes 50,000-65,000 psi to get the bullet started. Thanks for any pertinent data you can provide. [/QUOTE]
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Ramshot Magnum vs. barrel life
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