I never stop learning----This weeks lesson herein

[DLJ6]

Thanks for sharing, Ive had my finger on the trigger to order a gauge for a while but just can't seem to pull it.

 

[Bang4theBuck]

Well, I believe that the bullet is being forced back toward the center a bit. But I appreciate your opinion.

I'm also thinking that large amounts of runout could be the equivalent of a chamber ream not being concentric woth the bore, which I do believe woukd be near the top of.the list of potential accuracy problems. I'm no expert, just talking here. The results on target will ultimately determine how much I care and how much effort I will put toward fixing any runout issues.

 

[Old Rooster]

When I got my concentricity gauge I measured some .300 win mag loads that I just finished. The worst one was .002" runout while most were less. I thought that I wasted money on the gauge or it did not work. For the next hour or more I was digging out boxes of reloads and some old factory loads from 20 years ago. The gauge worked just fine. I found that rotating the shell three times while seating the bullet helped. I also found one set of .308 dies just needed to be replaced.

Which gauge did you get and are you happy with it?

 

[Bang4theBuck]

The gauge I got is a Redding. I like it....its simple. The hornady model is set up to 'adjust concentricity' as much as it is to measure it. I woukd not personally want one of those. Just my two cents.