Hornady Concentricity gauge

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There are a lot of little things that impact accuracy. If your already doing the little things that can impact the accuracy: sorting by case volume, weighing every load, All cases have the same number of firings, All trimmed and I know there is probably some more I'm forgetting. Using a rifle capable of your goal it may help. Other wise it's a waste of time.
 
So the Hornady actually lets you force the bullet sideways to adjust runout? That's interesting. They sure are putting a lot of faith in whatever is holding that round by the case head. I'm would worry that the 'adjustment' force might just shift the whole round slightly in the holder rather than actually move the bullet into alignment, but I don't think Hornady would be selling them if they didn't work.

The Sinclair is well-known and widely respected, plus it's cheaper, but it only indicates the concentricity and doesn't let you adjust it as far as I can tell. Did you want to use the adjustment tool or are you just interested in knowing how concentric your ammo is?

I think a fellow could build one of these at home if he had a good selection of junk and some basic metalworking skills. All you really need to by is a cheap dial indicator from Harbor Freight.
 
I have one and wish I had the Sinclair instead. You can correct a degree of run out some times. The tool uses the case head to create 1/2 of the axis and the bullet nose for the other half. The weakness is the method of centering the case head which is spring tension and reliance on the head being a perfect level circumference. If you want accurate measurements to evaluate by, the Sinclair is superior. For possible correction of the run out, the Hornady is the choice.
 
I bought a Hornady and was given a Sinclair and a RCBS.

The Hornady is the easiest and fastest to use to check for run out and gives the same value as the other two with out having to hold the case down while turning. I tend to fumble around with the others.

The others allow checking cases alone which the Hornady does not. And they work well for that also.

As far as adjusting run out, it will but the whole theory I have a problem with. If the case/neck is not holding the bullet straight and you stretch it a little to change run out the neck still is not straight and when the bullet starts to move it will move in the direction it was originally pointed. Maybe I am over thinking it a little. I have no clue if it actually will help accuracy or not. I am skeptical.

I like the Hornady for what it does for me, check concentricity.

GD
 
Well, too late for me now since I already ordered and it will be here Tuesday. :D I wanted it to be able to adjust if needed but, I've heard the Forster Coax produces fairly concentric rounds any way. May wind up being a door stop! :)
 
I do not think so. I use the Hornady 10 to 1 the others.

Try adjusting some, test and let us know.

GD
 
Try it yet??

p5200, did you try that Hornady concentricity gauge? I'm thinking of getting one, but would like some more opinions.
 
This tool is very useful! I have used it to create extreamly accurate ammunition.
Its a tool that creates referance a point for "various" uses such as overall length to the rifling with a given bullet, or throat erosion indicator ( this is descibed in the thread response). This is a shortcut for a thread (different website) I responded to just a week ago. My handle is dthunter there as well.

http://www.canadiangunnutz.com/forum/showthread.php?t=778265


hope this information/thread is useful for you.
 
The preceding poster seems to be referring to the Hornady bullet comparator that will aid in measurements of seating depths relative to throats and the beginning of rifling in a barrel. The concentricity gage is a different animal entirely and I have found it lacking.
 
P5200

Years ago L. E. Wilson ran an advertisement in the gun magazines showing the value of their straight line seating dies vs. the competition, using a concentricity gauge. They would spin a loaded round, mark the high side with a felt tip marker, then alternate firing the rounds with the mark up and then down. In so doing they would shoot two distinct groups; one high and one low. That was very clever of them; shows the value of a concentricity gauge and their straight line seating dies. I tried it and it works.

As far as trying to nudge a loaded cartridge back into concentricity, not so much, I’ve never tried it. I would rather attack the problem and find a solution as to why the cartridge is crooked to begin with. A concentricity gauge is a good tool to have; fun to play with, and should help you make some accurate fodder. I would like to hear, as well as others would here, how well the nudging goes. If you could give us a full report (you know, before and after, with numbers and pie charts) of your experiences with the nudging tool, it would be much appreciated by all. The tool looks to be fairly well built, in my estimation. Let us know.

kerf
 
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