Concentricity gauge

[Brad Johnson]

Looking for a Concentricity Gauge . Thanks

 

[RustyInBend]

Here's the one I use .. it's terrific.

SINCLAIR INTERNATIONAL SINCLAIR CONCENTRICITY GAUGE

Check out SINCLAIR INTERNATIONAL SINCLAIR CONCENTRICITY GAUGE with 51 reviews and an overall rating of 4.4, available Online at Brownells Today and many more Concentricity Gauges products are available in our Reloading Department.

www.brownells.com

 

[quest450]

 

[Hoser]

I am happy with my Accuracy One. Not sure it helped my scores though.

Accuracy One Concentricity Gauge

The Accuracy One Concentricity Gauge measures the internal and external neck runout of a cartridge case as well as seated bullet runout.

bullettipping.com

 

[fisherman987]

I have a 21st century guage I could part with if you are interested.

Concentricity Gauge with Wheel and Indicator

Uses industry standard concentricity indicator Measures bullet runout, neck, body case mouth and inside neck concentricity Accommodates cartridges up to .50bmg Adjustable case stop Wheel eliminates error, holds case on roller bearings ensuring accurate measurement Deviations in concentricity of...

21stcenturyinnovation.com

 

[JEFFPPC]

If you really need one you have bigger problems but it might help you find the problem. I bet it's the most bought unused tool out there. Mostly unnecessary. Good shooting to you.

 

[AICS308]

A buddy has a really nice Concentricity gauge, don’t remember the Brand. He said it sits on the shelf collecting dust. Told me it stays there until he needs to trouble shoot ammo problems or verify new dies. Sounds reasonable.

 

[209jones]

I pretty much only use it when I get a new die these days, see if there is anything funky going on with it, then it sits, other than if I get the odd urge to double check just for the heck of it.

 

[DShortt]

I have the Sinclair model as shown in post #2. I have no complaints.

I would avoid the Hornady version. Bad concept, IMO.

The Hornady version measures between the extreme ends. No way to determine if the case neck is off or if the bullet is seated crooked. And pushing the loaded round sideways to correct any run-out? Opening a can o' worms.

 

[209jones]

Didn't like the Horny version, didn't have any trust in it, Sinclair is better, bit finicky about how you roll things on it though. Would probably have tried the angled Redding instead, but, none to be had at the time, and Sinclair was on sale for about 1/2 price, so, good enough for the purpose.

 

[Flea21]

I use the Redding one with the slanted bed. I agree, its not a tool thats used much but its good to use between steps to see what step is adding runout and then work on upgrading that tool to improve things. I did it with my bushings, I switched to SAC from Redding TiN bushings and Tir went to almost zero.

 

[lotech]

I've had a Sinclair for about fifteen years. Least used tool on my bench. Apparently all my rifle ammo has always been pretty concentric.

 

[gmr4]

I use my 21st Century to check new dies… new in line seater. Dont mess with it otherwise. I did find that my Forster Co-Ax is way better than my Rock- Chucker.. did all that testing and measuring and like people have said… dont really use it any more.

 

[Sniper338]

I have the Sinclair and 21st century.

Contrary to what other say, I actually use mine quite a bit to watch what necks are doing... or find how bad neck are before neck turning to skim off high spots.

 

[Bugs]

I discovered a few problems with my sizing and expanding process that I didn't know that I had. A good concentricity checker (I use the Accuracy one unit) helped me identify and correct the problems. Did it actually help on paper ? ? ? who knows.

 

[209jones]

I have the Sinclair and 21st century.

Contrary to what other say, I actually use mine quite a bit to watch what necks are doing... or find how bad neck are before neck turning to skim off high spots.

It is interesting throwing various makes of brass on the neck tool, certainly speaks to the vagaries of some makes, find some interesting stuff out about them.