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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Free Recoil calculation spreadsheet
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<blockquote data-quote="JASmith" data-source="post: 1616953" data-attributes="member: 24844"><p>Powder gases can add 20-40 percent or more to the recoil, depending pn bullet weight, mass of powder and so forth. Spreadsheet estimators tend to include a contribution that includes the weight of the powder and a factor of about 1.5 times the bullet velocity to estimate the gas contribution.</p><p></p><p>That estimate is almost always close enough that the shoulder won't know the difference!</p><p></p><p>There is at least one estimator, however, that refines the gas contribution by allowing an adiabatic expansion of the charge to estimate the front velocity of the expanding gas column and then runs a linear distribution of the velocity to get the momentum contributed by the gas.</p><p></p><p>One can play with the estimator here: <a href="http://shootersnotes.com/calculator/velocity-estimator/" target="_blank">http://shootersnotes.com/calculator/velocity-estimator/</a>. </p><p></p><p>Use one of the sample cartridges to start. The recoil button is on the input page and one can choose rifle weight to see how that contributes to ft-lb of recoil.</p></blockquote><p></p>
[QUOTE="JASmith, post: 1616953, member: 24844"] Powder gases can add 20-40 percent or more to the recoil, depending pn bullet weight, mass of powder and so forth. Spreadsheet estimators tend to include a contribution that includes the weight of the powder and a factor of about 1.5 times the bullet velocity to estimate the gas contribution. That estimate is almost always close enough that the shoulder won't know the difference! There is at least one estimator, however, that refines the gas contribution by allowing an adiabatic expansion of the charge to estimate the front velocity of the expanding gas column and then runs a linear distribution of the velocity to get the momentum contributed by the gas. One can play with the estimator here: [URL]http://shootersnotes.com/calculator/velocity-estimator/[/URL]. Use one of the sample cartridges to start. The recoil button is on the input page and one can choose rifle weight to see how that contributes to ft-lb of recoil. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Free Recoil calculation spreadsheet
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