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Extreme Long Range Hunting & Shooting (ELR)
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<blockquote data-quote="Fiftydriver" data-source="post: 777798" data-attributes="member: 10"><p>These special throat designs really change the pressure characteristics of a specific chambering. I can only speak for my experiments but in most cases, it takes a couple grains more powder to reach standard velocities but they also allow for even more powder to be used to take velocity significantly over standard velocity ranges.</p><p> </p><p>Some chamberings also seemed to benefit from stepping down to a slightly faster burn rate of powder. </p><p> </p><p>The flattening of the pressure spike is truely impressive and the ability to give the advantage of freebore with the accuracy benefits of a short throated chamber is really the best of both worlds.</p><p> </p><p>One word of caution, keep the barrel cool. In my testing, these throats, depending on barrel, can be a bit sensitive to getting the barrels hot and keep them shooting. Some of my test barrels have had very limited barrel life as I was not overly kind to them doing ballistic and load development. Others have lasted nearly as long as standard throat barrels, those being barrels that I limited to three shot strings and allowed to cool between.</p><p> </p><p>Have fun!!!</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 777798, member: 10"] These special throat designs really change the pressure characteristics of a specific chambering. I can only speak for my experiments but in most cases, it takes a couple grains more powder to reach standard velocities but they also allow for even more powder to be used to take velocity significantly over standard velocity ranges. Some chamberings also seemed to benefit from stepping down to a slightly faster burn rate of powder. The flattening of the pressure spike is truely impressive and the ability to give the advantage of freebore with the accuracy benefits of a short throated chamber is really the best of both worlds. One word of caution, keep the barrel cool. In my testing, these throats, depending on barrel, can be a bit sensitive to getting the barrels hot and keep them shooting. Some of my test barrels have had very limited barrel life as I was not overly kind to them doing ballistic and load development. Others have lasted nearly as long as standard throat barrels, those being barrels that I limited to three shot strings and allowed to cool between. Have fun!!! [/QUOTE]
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