Bullet concentricity guage

[Kevin1990]

Checked the forum and haven't seen anything in years on the subject.(most certainly using the search function wrong.)

Looking to get a concentricity guage. Looked at a few, and think I like the Sinclair with the dial indicator.

Any reason not to get this one? Any other options out there that are better, or within the same price range?

Any out there that can check bullet and neck all in one?


Thanks fellas,
Kevin

 

[David Christian]

I used to own a concentricity gauge. I either loaned it out or sold it in a garage sale.

On a serious note, all of my testing told me that it just doesn’t matter all the way out to .007 out of concentric, and then I stopped measuring. (My testing is done at 1,000 yards).

 

[Ranger188]

Save your money and don't buy one.
If you have good reloading dies and somewhat good skills, not needed.

 

[Rsadams]

I found it useless... Of course I am not shooting serious competition anymore.... Use that time making your brass prep the best you can and hand pick you bullets.... I am sure if you had a great rifle , scope and had the talent to shoot incredible then like a lot of other things out there it might be that little extra edge to push you through a wall you can't get over.... Every reloader here has a box of both cheap and expensive latest and greatest tools etc out there they don't use anymore because it just didn't have enough effect to warrant the extra time , I certainly do..... Spend the most time on the basics and it will pay off greatly... Reloading isn't hard but you can certainly make it a PITA.... I would rather spend my time behind the rifle actually shooting it...

 

[Bill Norris]

Agree the tool is O K to own but definitely not needed by most hand loaders.

 

[NZ_Fclass]

Right up there with primer polishing....seriously, I think that ramming the bullet up an undersized tube at 10,000 mph will sort it out. Seating concentricity is of more importance.

 

[AlNyhus]

While I own several concentricity tools, I'm not a slave to them....mainly using them to check new dies.

Then last week, for no particular reason, I rolled a 30BR on the Sinclair and did a double take on the bullet runout. Checked a few more and confirmed it was real. Further checking uncovered a tweaked seating stem on the Wilson seater. A new seater stem and all was good again.

Good shootin' -Al

 

[sqrlgtr]

I had the Sinclair and it worked all right after you get the hang of it, got the Century 21 unit 2nd hand off of here and prefer it over the Sinclair unit. I use mine quite often and like Al mentioned above have caught problems that I wouldn't have known about without having checked. I shoot short range benchrest so want every advantage I can get and like the peace of mind in knowing that I have made the straightest most consistent ammo possible.

 

[Intheshop]

>Just the way it effects my efforts to get deadnuts straight ammo;

Would give it a "2" on a 10 scale.... for actually doing anything meaningful.

>On it's ability to separate the loader from his available $$;

Gets a 9

> dust collection device;

Probably a 9 also

>how does it compare with say a sm granite inspection plate outfitted with post/gage;

4

Read up on them. Heck,borrow one. To be brutally honest,coming from a cast bullet accuracy chaser.... where deadnuts straight bullets themselves,as well as cases,and finished ammo being required shooting short range bugholes at starting JB "book" velocity.... rolling on a flat plate is how I do it. And we have every imaginable bit of metrology kit. Just sayin,I LOVE buying inspection stuff....

Put your cash somewhere else. Good luck with your project.

 

[47WillysGuy]

Dial indicators(DI) for me are a sanity check. I see shoot competitively. I ordered a custom sizing die from a very well known die maker and after sizing a few fired cases found it tweaked the case necks out by 0.007”. With out the sanity check, I’d have never known of the error in the die.

Di’s can also be used to check primer seating depth or check full sizing of a fired case or play between barrel and the stock or runout difference between the case neck to the bullet. Do you really need a DI, it’s really up to you to decide!

 

[JMayo]

I have the Sinclair. It doubles as a bullet comparator.
If drop a made bullet I'll check it to see if it bent but after checking my reload countless of times i do not use it much except for bullets with as Hornady incert.

 

[nmkid]

I had one and sold it. Then, about 8 months ago I bought another one because I thought at that point I wanted to use it. It's sitting on a shelf and I have never used it to date!! I wonder if that stay at a Holiday Inn messed me up?

 

[hpshooter]

Have two, one Bonanza and one home made, both with dial indicators. Years ago every centerfire rifle round loaded went across one of them as well as new brass. After several years and unknown number of rounds, none of which showed over .001-.003 run out both, went on the shelf only to be retrieved to check initial rounds loaded with new to me dies or press. I am in the camp of may others who have responded- It is a feel good thing that you can spend a lot of money on a tarted up tool that does the same thing as rolling a case or loaded round over a table saw table or a piece of flat glass while closely watching the case mouth or bullet tip for relative movement to the flat surface.

If you have a chamber and throat that is concentric to the bore and perpendicular to the bolt face and there is little or no resistance to closing the bolt just how crooked could the round possibly be?

 

[Tesoro]

I used to own a concentricity gauge. I either loaned it out or sold it in a garage sale.

On a serious note, all of my testing told me that it just doesn’t matter all the way out to .007 out of concentric, and then I stopped measuring. (My testing is done at 1,000 yards).

This is probably the most relieving statement I have ever read on this forum! thanks!! Maybe I find another use for mine!!

 

[Kevin1990]

Right up there with primer polishing....seriously, I think that ramming the bullet up an undersized tube at 10,000 mph will sort it out. Seating concentricity is of more importance.

I was thinking the exact same thing with the ramming of the bullet through a small tube, but I figured I'd ask

 

[jimmymac]

A concentricity gauge is definitely worth having even though they don’t get used much.

 

[jr600yd]

Save your money, buy bullets.

 

[Cecil S.]

I own a very good one and i like it. But the rabbit hole is deep and expensive. I am a tool freak and learned alot from it but i dont get paid for my shooting.

 

[seymour fish]

Checked the forum and haven't seen anything in years on the subject.(most certainly using the search function wrong.)

Looking to get a concentricity guage. Looked at a few, and think I like the Sinclair with the dial indicator.

Any reason not to get this one? Any other options out there that are better, or within the same price range?

Any out there that can check bullet and neck all in one?


Thanks fellas,
Kevin

Fuggetaboutit ! Concentric it’s starts to enlarge 1000 yd groups when off way past 5 thou. More like 10 thou.

 

[Kevin1990]

I own a very good one and i like it. But the rabbit hole is deep and expensive. I am a tool freak and learned alot from it but i dont get paid for my shooting.

I know I'm asking rookie questions, because I am. To some extent I want to be like that. I don't plan on using it every single time, with every single reload, but just another tool, to help with a sanity check, new dies, etc.