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Rifles, Reloading, Optics, Equipment
Reloading
How much bullet into the case neck?
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<blockquote data-quote="idaho elk hunter" data-source="post: 928759" data-attributes="member: 68226"><p>The general rule is of a physics point of view is one caliber. This was taught many years ago to those that wanted a answer but did not know the physics behind it. For any object to be stable it needs to be square. Same height same width with 90 degree corners. Case in example. A rectangle on end would topple over much easier than a square. This applied to a bullet would be that it has less "wobble" before it enters the rifling, especially in a freebore application. This is also why so many precision shooters want tight necks. Then many of the educated reloaders that had some engineering degrees and studied the actual working effects of 60000 lbs of instant pressure on a bullet base tested and concluded that neck tension is much more important than the square factor. Square factor is still very important but is not the only consideration. Forester dies has a great explanation on this. Al in All most os the time less neck tension will provide better accuracy. This is why some reloaders under stand to neck size down only half way down the neck. This aligns the cartridge better in your chamber and has less tension on the neck. Some of us really old gunsmiths remember this. AND I AM NOT ADVERTIZING.. I AM RETIRED AND NOW HAVIN FUN WITH IT. Work is having to do it. fun is wanting to do it.</p></blockquote><p></p>
[QUOTE="idaho elk hunter, post: 928759, member: 68226"] The general rule is of a physics point of view is one caliber. This was taught many years ago to those that wanted a answer but did not know the physics behind it. For any object to be stable it needs to be square. Same height same width with 90 degree corners. Case in example. A rectangle on end would topple over much easier than a square. This applied to a bullet would be that it has less "wobble" before it enters the rifling, especially in a freebore application. This is also why so many precision shooters want tight necks. Then many of the educated reloaders that had some engineering degrees and studied the actual working effects of 60000 lbs of instant pressure on a bullet base tested and concluded that neck tension is much more important than the square factor. Square factor is still very important but is not the only consideration. Forester dies has a great explanation on this. Al in All most os the time less neck tension will provide better accuracy. This is why some reloaders under stand to neck size down only half way down the neck. This aligns the cartridge better in your chamber and has less tension on the neck. Some of us really old gunsmiths remember this. AND I AM NOT ADVERTIZING.. I AM RETIRED AND NOW HAVIN FUN WITH IT. Work is having to do it. fun is wanting to do it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How much bullet into the case neck?
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