Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

Concentricity

 
LinkBack Thread Tools Display Modes
  #8  
Old 02-11-2011, 08:36 PM
Platinum Member
 
Join Date: Aug 2003
Location: NC, oceanfront
Posts: 3,210
Re: Concentricity

Yeah, your ammo is straight when it measures so on this Sinclair(or effective similar):
SINCLAIR INTERNATIONAL : Sinclair Concentricity Gage -

They marchandise it as a concentricity gage. Sounds sexier I guess..
But it doesn't measure concentricity, or eccentricity.
It's a runout indicator.
Reply With Quote
  #9  
Old 02-12-2011, 01:18 PM
Silver Member
 
Join Date: Oct 2008
Location: Bryan, Tx
Posts: 284
Re: Concentricity

people sure love to see those low numbers. if the machine design masks the run out then the low number doesn't mean anything. it just gives people what they want to see . +1 mike. it also depends on where you take your measurements. run out is always greater further down the bullet.
Reply With Quote
  #10  
Old 02-13-2011, 03:15 PM
Bronze Member
 
Join Date: Oct 2008
Posts: 51
Re: Concentricity

Quote:
Originally Posted by nheninge View Post
it also depends on where you take your measurements. run out is always greater further down the bullet.
Depends on where the cartridge is supported when you are making the measurement. Some gauges support near the head and near the tip of the bullet. In that case, measuring near the middle between them will give you the largest reading for a given amount of "crookedness". If the cartridge is supported at both ends of the body (below the shoulder) then, yes, further out on the bullet gives larger readings. Beware of trying to compare measurements from two people with different setups.

Andy
Reply With Quote
  #11  
Old 02-13-2011, 07:17 PM
Platinum Member
 
Join Date: Aug 2003
Location: NC, oceanfront
Posts: 3,210
Re: Concentricity

Quote:
Originally Posted by BigJakeJ1s View Post
Some gauges support near the head and near the tip of the bullet. In that case, measuring near the middle between them will give you the largest reading for a given amount of "crookedness
This is true of actual 'concentricity' gages. But you might notice that they typically indicate nearest support of the bullet tip, which provides only a portion of 'crookedness'..
Reply With Quote
  #12  
Old 02-16-2011, 11:52 AM
Silver Member
 
Join Date: Apr 2010
Location: Boise , Idaho
Posts: 131
Re: Concentricity

I fell for it too, the hornady gage is cool but not all that practical.

Buy the Sinclar or make your own with some bb's or V holders.

Better yet, you have half of what you need on the Hornady already, just add some v holders to it and reverse the concave head holder to the flat side for your end stop......I have a new mission

Scope rings almost work....I'll find something laying around here to mount to it.
Reply With Quote
  #13  
Old 02-16-2011, 10:15 PM
Silver Member
 
Join Date: Jan 2011
Location: West Virginia
Posts: 169
Re: Concentricity

So is the Hornady even worth having or did I completely waste my money? And is it really a good idea to use it to "straighten" cartridges. It seems like when correcting the run-out with that thing you may cause more distortion in areas you aren't measuring and make your load worse even though the gauge says otherwise. Any thoughts?
Reply With Quote
  #14  
Old 02-16-2011, 10:40 PM
Silver Member
 
Join Date: Oct 2008
Location: Bryan, Tx
Posts: 284
Re: Concentricity

waste of money IMHO. Build them right from the start.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Concentricity
Thread Thread Starter Forum Replies Last Post
Concentricity? kc Reloading 9 04-05-2011 07:05 PM
Concentricity:How much ? J E Custom Reloading 45 04-08-2010 09:05 PM
Chamber concentricity toklat04 Gunsmithing 5 08-02-2008 11:01 AM
Chamber concentricity toklat04 Reloading 2 08-02-2008 08:15 AM
Concentricity StrayDog General Discussion 10 10-06-2004 09:27 AM

Current Poll
Have You Ever Backpack Hunted?
YES - 62.38%
1,066 Vote
NO - 37.62%
643 Votes
Total Votes: 1,709
You may not vote on this poll.

All times are GMT -5. The time now is 03:26 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC