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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity gauge
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<blockquote data-quote="woods" data-source="post: 339135" data-attributes="member: 6042"><p>The H & H looks similar to the new Hornady</p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/hornadyconcentricitygauge.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I have some experience fixing runout with the Bersin</p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0388.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>with it you push on the bullet but like Robster shouted at us, you are mostly just canting the bullet, or perhaps uncanting it. The Bersin is a good runout reducer, not a runout eliminator. There is a trick to learning just how hard to push on the bullet just enough but not too much. If you push too much then you will have to go to the other side and push it back. Many times you can go round and round pushing here and there and just chasing it around until you loosen the bullet in the neck. Soft case necks will push easier than work hardened ones. </p><p></p><p>The most useful purpose of concentricity gauges is to show you what you are doing that is reducing or creating runout in your sizing and prep procedures. Once you have a system down and buy the best cases with the least amount of variation in neck thickness, size with a die like the Lee Collet that does not create runout, size with a die like the bushing die in combination with neck turning and use a Competition Seater with a seating stem that fits your bullet, then you can fine tune your procedures to not have runout in the first place.</p><p></p><p>However the H & H, Hornady or Bersin will reduce runout somewhat, generally 50% to 75%.</p><p></p><p>Just my experience, YMMV</p></blockquote><p></p>
[QUOTE="woods, post: 339135, member: 6042"] The H & H looks similar to the new Hornady [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/hornadyconcentricitygauge.jpg[/IMG] I have some experience fixing runout with the Bersin [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0388.jpg[/IMG] with it you push on the bullet but like Robster shouted at us, you are mostly just canting the bullet, or perhaps uncanting it. The Bersin is a good runout reducer, not a runout eliminator. There is a trick to learning just how hard to push on the bullet just enough but not too much. If you push too much then you will have to go to the other side and push it back. Many times you can go round and round pushing here and there and just chasing it around until you loosen the bullet in the neck. Soft case necks will push easier than work hardened ones. The most useful purpose of concentricity gauges is to show you what you are doing that is reducing or creating runout in your sizing and prep procedures. Once you have a system down and buy the best cases with the least amount of variation in neck thickness, size with a die like the Lee Collet that does not create runout, size with a die like the bushing die in combination with neck turning and use a Competition Seater with a seating stem that fits your bullet, then you can fine tune your procedures to not have runout in the first place. However the H & H, Hornady or Bersin will reduce runout somewhat, generally 50% to 75%. Just my experience, YMMV [/QUOTE]
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