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Rifles, Reloading, Optics, Equipment
Reloading
quick load for 6.5x55 please
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<blockquote data-quote="bigedp51" data-source="post: 1197548" data-attributes="member: 28965"><p>You didn't give case capacity or OAL but the Quickload guesstimate is over 68,000 psi at 2952 fps. I had to increase the burn rate to get the velocities to match, at the default settings the velocity was 2885 fps at 63,000 psi with 50 grains of H4831sc.</p><p></p><p>Time to back down the load.</p><p></p><p>At accurateshooter.com a long range competitive shooter would increase the load until he had brass flow into the ejector and then back off 1 or 2 grains. The problem with this is brass flow happens at approximately 70,000 psi and the 6.5x55 is rated at 55,000 psi.</p><p></p><p><img src="http://i122.photobucket.com/albums/o254/bigedp51/marks_zps63d0459a.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below is from the H.P. White testing Labratory.</p><p></p><p> <img src="http://i122.photobucket.com/albums/o254/bigedp51/Overpressure-boltthrust_zps663146ce.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i122.photobucket.com/albums/o254/bigedp51/BoltRightLugCloseup0212192009-1_zps1aqcjc7e.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1197548, member: 28965"] You didn't give case capacity or OAL but the Quickload guesstimate is over 68,000 psi at 2952 fps. I had to increase the burn rate to get the velocities to match, at the default settings the velocity was 2885 fps at 63,000 psi with 50 grains of H4831sc. Time to back down the load. At accurateshooter.com a long range competitive shooter would increase the load until he had brass flow into the ejector and then back off 1 or 2 grains. The problem with this is brass flow happens at approximately 70,000 psi and the 6.5x55 is rated at 55,000 psi. [IMG]http://i122.photobucket.com/albums/o254/bigedp51/marks_zps63d0459a.jpg[/IMG] Below is from the H.P. White testing Labratory. [IMG]http://i122.photobucket.com/albums/o254/bigedp51/Overpressure-boltthrust_zps663146ce.jpg[/IMG] [IMG]http://i122.photobucket.com/albums/o254/bigedp51/BoltRightLugCloseup0212192009-1_zps1aqcjc7e.jpg[/IMG] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
quick load for 6.5x55 please
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