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Concentricity gage?

 
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  #1  
Old 03-08-2008, 11:59 AM
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Concentricity gage?

How many of you use them?Have you noticed an increase in accuracy by checking runout on case necks?I am thinking about ordering a Redding gage,I just wanted to make sure it is something I would benefit from before buying one.
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Old 03-08-2008, 12:07 PM
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Yup, got one and use it all the time.;)

If you don't have one how would you ever know if you had acceptable runout in you necks, bullets etc. in you loaded rounds.

The gage, in itself, won't produce more accurate ammo but it will tell you when and if you have a problem and then you can track down the problem and fix it.

You will find that depending on the components used, the gun you have and the results you want, that your runout will probably vary in acceptable limits for different conditions.

For long range shooting the tighter you can hold the runouts the better off you will be to my way of thinking.
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Old 03-08-2008, 03:01 PM
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Are you sure Redding has a concentricity gage?
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Old 03-08-2008, 03:30 PM
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Ok, here's the newbie question for this thread. Could someone explain to me what runout is?

tks
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Old 03-08-2008, 03:37 PM
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Take a loaded factory round and roll it across a flat surface while watching the bullet tip. See it wobling around? Where it wobles, it points when chambered. Pointing directly down the center of the barrel is preferred.
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Old 03-08-2008, 03:41 PM
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If you set up either an empty case or a loaded round in a gage, you can then spin it and watch the dial indicator. It will tell you, in .001" increments, how far out your neck or loaded bullet is from being perfectly concentric.

A lot of runout is a killer and accuracy usually suffers greatly. Most of my long range rounds run .0015" or less runout.
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Old 03-08-2008, 04:40 PM
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Mikecr & Dick, thanks for the info. I get it now.

So if you've got alot of runout, what sort of stuff might one try to decrease runout?

Cheers

Last edited by Slopeshunter; 03-08-2008 at 04:44 PM.
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