|
Joined: Jan 2007
Posts: 956
Campfire Regular
|
OP
Campfire Regular
Joined: Jan 2007
Posts: 956 |
Everyone seems to have runout tolerances that they load to, so my question is, what is the best or most common location to take runout readings on loaded cartridges using a sinclair style concentricity guage? Case neck, bullet bearing surface, or some where between bullet bearing surface and bullet tip?
|
|
|
|
Joined: Aug 2015
Posts: 13,234
Campfire Outfitter
|
Campfire Outfitter
Joined: Aug 2015
Posts: 13,234 |
I measure at or near the ogive, as identified by a bullet comparator.
Let's Go Brandon! FJB
|
|
|
|
Joined: Jun 2006
Posts: 46,024
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Jun 2006
Posts: 46,024 |
Case neck, bullet bearing surface, or some where between bullet bearing surface and bullet tip? Definitely not on the neck. Neck runout and bullet runout are two different things. I've always measured the bullet just ahead of the case mouth.
A wise man is frequently humbled.
|
|
|
|
Joined: Nov 2011
Posts: 30,954
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Nov 2011
Posts: 30,954 |
The idea is to measure the most runout, while still getting highly repeatable results. For me, that's measuring in the upper third of the bearing surface.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
|
|
|
|
Joined: Oct 2004
Posts: 4,340
Campfire Tracker
|
Campfire Tracker
Joined: Oct 2004
Posts: 4,340 |
I measure out towards the tip of the bullet. I know it gives me an exaggerated measurement and therefore if I'm under .003 I'm pretty darn happy. .004 or more and I get it corrected in my tru tool.
|
|
|
|
Joined: Nov 2005
Posts: 6,168
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2005
Posts: 6,168 |
I measure the bullet on the bearing surface as far forward as practical. A lot of the slippery bullets don't have that much, so in that case I do it just forward of the case mouth.
The collection of taxes which are not absolutely required, which do not beyond reasonable doubt contribute to public welfare, is only a species of legalized larceny. Under this Republic the rewards of industry belong to those who earn them. Coolidge
|
|
|
|
Joined: Mar 2009
Posts: 4,404
Campfire Tracker
|
Campfire Tracker
Joined: Mar 2009
Posts: 4,404 |
I just loaded some 7mag rounds.Nine of each Remington and Winchester brass.First ones were loaded with 160gr Nosler Accubonds.Eight of the Remington cases had .001 or less,one has .004 run out.The Winchesters didn't fare as well.Only two had .002 or less,seven had .003-.005.,one had .009 run out.Then I loaded nine of each with 150gr Nosler CT Silver Tips.This time three of the Remington cases were .002 or less,six were .004-.005.The Winchester cases had four that were .002 or less and five were .003-.004 and one was .007.
Last edited by baldhunter; 05/01/16.
~Molɔ̀ːn Labé Skýla~ As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............
|
|
|
|
Joined: Jun 2004
Posts: 44,820
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Jun 2004
Posts: 44,820 |
I just loaded some 7mag rounds.Nine of each Remington and Winchester brass.First ones were loaded with 160gr Nosler Accubonds.Eight of the Remington cases had .01 or less,one has .04 run out.The Winchesters didn't fare as well.Only two had .02 or less,seven had .03-.05.,one had .09 run out.Then I loaded nine of each with 150gr Nosler CT Silver Tips.This time three of the Remington cases were .02 or less,six were .04-.05.The Winchester cases had four that were .02 or less and five were .03-.04 and one was .07. I hope you've forgotten to insert some zeros in there.
|
|
|
|
Joined: Mar 2009
Posts: 4,404
Campfire Tracker
|
Campfire Tracker
Joined: Mar 2009
Posts: 4,404 |
I just loaded some 7mag rounds.Nine of each Remington and Winchester brass.First ones were loaded with 160gr Nosler Accubonds.Eight of the Remington cases had .01 or less,one has .04 run out.The Winchesters didn't fare as well.Only two had .02 or less,seven had .03-.05.,one had .09 run out.Then I loaded nine of each with 150gr Nosler CT Silver Tips.This time three of the Remington cases were .02 or less,six were .04-.05.The Winchester cases had four that were .02 or less and five were .03-.04 and one was .07. I hope you've forgotten to insert some zeros in there. Fixed it!
~Molɔ̀ːn Labé Skýla~ As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............
|
|
|
|
606 members (10gaugemag, 007FJ, 11point, 10gaugeman, 10ring1, 10Glocks, 63 invisible),
2,393
guests, and
1,198
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums81
Topics1,191,423
Posts18,470,653
Members73,931
|
Most Online11,491 Jul 7th, 2023
|
|
|
|