Long Range Hunting Online Magazine


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

Reloading Techniques For Reloading


Reply

Measuring TIR bullet run-out

 
LinkBack Thread Tools Display Modes
  #1  
Old 09-22-2009, 09:57 AM
Gold Member
 
Join Date: Mar 2008
Location: N. Central Indiana
Posts: 560
Measuring TIR bullet run-out

I'm doing some loading in preperation for hunting season. In checking the runout of the loaded rounds, where should the indicators' tip be placed on the bullet? I'm using a Sinclair Concentricity gauge, and I have the contact points for the case set at just in front of the base, and just behind where the shoulder meets the case body.

I'm finding that I can group the loaded rounds in 3 distinct groups, 1) TIR of <.0015 TIR, 2) .002-.003 TIR and 3) .005-.007 TIR, and they are 60%, 30% and 10% of the loaded rounds respectively. Same brass lot, same bullet lot and all fired in the same gun, same number of firings on the cases.
Reply With Quote

  #2  
Old 09-22-2009, 10:47 AM
Junior Member
 
Join Date: Sep 2009
Posts: 27
Re: Measuring TIR bullet run-out

To get the best measurement the indicator should be placed just back from the tip of the bullet, say 3/16" . If it is a ballistic tip come back on the copper. However each casing neck should be checked before seating the bullet. Necks should have no more than .001 runout. If they do try running them thru the sizing die one more time. If you cannot correct this condition, seating a bullet and correcting bullet runout can only be corrected to the runout measurement of the case neck. Your best ammo will be those that have less than .001 runout in the bullet and case neck combined. Hope this helps. Capt. Kurt
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Measuring TIR bullet run-out
Thread Thread Starter Forum Replies Last Post
Measuring base of case to bullet ogive mtang45 Reloading 11 06-15-2013 09:51 AM
Measuring Bullet Seating off the Lands ntrl_brn_rebel Reloading 17 06-30-2010 11:36 PM
bullet ogive measuring for mile shooting goodgrouper Rifles, Bullets, Barrels and Ballistics 16 01-21-2009 11:52 AM
Measuring bullet bearing surface? Dan B Rifles, Bullets, Barrels and Ballistics 10 06-11-2006 06:16 AM
Measuring Bullet Bearing Surface Troy Rifles, Bullets, Barrels and Ballistics 6 03-09-2004 09:57 PM


All times are GMT -5. The time now is 08:39 AM.


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