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Old June 18, 2013, 08:53 PM   #8
Eppie
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Join Date: January 7, 2010
Location: Houston, TX
Posts: 802
BumbleBug, I just finished reading the section on neck tension in Glen Zediker's book.

It turned into another discussion on the importance of neck thickness and its impact on neck tension. However he defines neck tension as constriction quantity.

The constriction quantity is: the difference between the i.d. of the case neck and the o.d. of the bullet.

Bench rest people will likely want it less constriction since they are loading one round at the time, bolt action rifle needed a little tighter because they are fed by a magazine and the tip of the bullet will get slightly bumped during the loading. And of course AR type rifles need a pretty tight constriction to resist the jolt that the bolt release gives the bullet when being loaded.

So the answer is different for different type of shooters and rifles. And as often is the case there is a fine line between too much and too little. as little as .001
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