Thread: Could finally be a Concentricity guage that works.

Have had pretty poor experiences with concentricity guages/correctors (due to the points made in this review)- this one might actually be worthwhile??

New Wheel-Drive Concentricity Gauge from Accuracy One « Daily Bulletin

Looks the berries.

Nothing wrong with one that you rotate with your fingers.




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The one I made out of a V block and dti works fine too R93 but some people like nice things, Blasers and Sakos come to mind

Originally Posted by R93

Nothing wrong with one that you rotate with your fingers.




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I wasn't having much luck R93. (I think for the reason explained in the article).

-Seemed a bit hit-and-miss in my hands. -was getting varying results, so I lost faith in it and stopped using it.

Yeah I like nice stuff but how do you have problems with a simple run out gauge? sausage fingers?

Originally Posted by veitnamcam

The one I made out of a V block and dti works fine too R93 but some people like nice things, Blasers and Sakos come to mind

-"V-block" 's a good idea, then rolling the case is less likely to throw the position.

A question:
-I've always assumed we are trying to get concentricity between the case & projectile. But this assumes the bore is cut parallel (concentric) with the chamber??
-Is there any way to check that the bore and chamber are in fact alligned properly?

Originally Posted by sneeze

Yeah I like nice stuff but how do you have problems with a simple run out gauge? sausage fingers?

Salamis

Check your fired case

And then cry if it's not what you expected? Better to never know

Originally Posted by veitnamcam

Check your fired case

Ah, so the "neck" portion of the chamber couldn't be machined out of allignment to the bore then??

(Humour me- I know next to nothing about machining).

Originally Posted by veitnamcam

The one I made out of a V block and dti works fine too R93 but some people like nice things, Blasers and Sakos come to mind

True. But I cant work out how one would have problems with a simple one.
I dont own Blasers coz they are nice. If you seen the state of my rifle it would be obvious.
I own them because they best suit my needs and are extremely practical.
Ok, my F3 is pretty and could be replaced with a cheaper gun, but its the only thing I own thats pretty and does not need to be.


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Originally Posted by Spanners

And then cry if it's not what you expected? Better to never know

Hahaha- yeah, that's the point I got to:

-realised I didn't really know 'how much was too much' anyway, and the rounds were shooting better than I can consistently. So it's pretty much stayed in the cupboard since then.

Originally Posted by James

Ah, so the "neck" portion of the chamber couldn't be machined out of allignment to the bore then??

(Humour me- I know next to nothing about machining).

Yes they can be out of line.
Very rare on a custom rifle, if you did come across one, the bugger that did it would be a lazy prick.
If you get no case runout on a fired case its a pretty good indication.
There are other ways to test but take a while to explain.


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Originally Posted by James

Ah, so the "neck" portion of the chamber couldn't be machined out of allignment to the bore then??

(Humour me- I know next to nothing about machining).

Yes shouldnt but it can.

Yeah salamis would make it a bit harder
I find the sinclair one very consistant when I can be bothered to use it.