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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
277 SIG Fury
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<blockquote data-quote="44-40" data-source="post: 2857969" data-attributes="member: 126985"><p>Been asked this before, where are all your pressure barrels, strain gauges, and electric testing equipment and your lab. This is not published data, this is my personal experiment for my rifles, do it at your own risk, and not, of coarse recommend by any manufacturer as it would void warranty...but I do not care about warranties, and never sent a rifle I purchased back to any manufacturer...just repair the gun myself. </p><p>Been doing it the same way before all the electronic equipment was mostly not invented yet. With the exception of a chronograph today. </p><p>The same way we developed loads with wildcats many years ago. Start with brass cases and published data, brass shows the max of a rifle easily. The case capacity is similar or almost the same depending on what brass case the SS case head is compared to...so you have a place to start, and compare velocity between the two. When the easy bolt lift stops, that is a big clue...primer will tend to flow back into the firing pin hole, but still be rounded on the edges, any hard bolt lift you are above what the rifle will deliver. STOP...pull bullets, proceed no farther.The primers may still appear rounded, and case heads pristine no marks at all ... but you are most likely over 80,000 psi. If you study load data and pressures of brass cases you will have a good idea what the max is for your rifle..before the testing is even started, as I have done with the powders I've tried in both calibers 308 win and 6.5 Creedmoor..havent had a blown primer in the cases or pound the bolt open ...</p><p>If ya do it... work up slowly, to the predicted pressure...and with experience, you will know. Only take what it gives you...or try another powder, and/or bullet.</p></blockquote><p></p>
[QUOTE="44-40, post: 2857969, member: 126985"] Been asked this before, where are all your pressure barrels, strain gauges, and electric testing equipment and your lab. This is not published data, this is my personal experiment for my rifles, do it at your own risk, and not, of coarse recommend by any manufacturer as it would void warranty...but I do not care about warranties, and never sent a rifle I purchased back to any manufacturer...just repair the gun myself. Been doing it the same way before all the electronic equipment was mostly not invented yet. With the exception of a chronograph today. The same way we developed loads with wildcats many years ago. Start with brass cases and published data, brass shows the max of a rifle easily. The case capacity is similar or almost the same depending on what brass case the SS case head is compared to...so you have a place to start, and compare velocity between the two. When the easy bolt lift stops, that is a big clue...primer will tend to flow back into the firing pin hole, but still be rounded on the edges, any hard bolt lift you are above what the rifle will deliver. STOP...pull bullets, proceed no farther.The primers may still appear rounded, and case heads pristine no marks at all ... but you are most likely over 80,000 psi. If you study load data and pressures of brass cases you will have a good idea what the max is for your rifle..before the testing is even started, as I have done with the powders I've tried in both calibers 308 win and 6.5 Creedmoor..havent had a blown primer in the cases or pound the bolt open ... If ya do it... work up slowly, to the predicted pressure...and with experience, you will know. Only take what it gives you...or try another powder, and/or bullet. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
277 SIG Fury
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