Looking for recommendations for a concentricity gauge. Sinclair, Hornady, RCBS - who's do you recommend and why?
Thanks,
Kaiser Norton
Thanks,
Kaiser Norton
Accuracy issues - concentricity gauge ? 's
- Thread starter KaiserNorton
- Start date
;DBoydAllen
Gold $$ Contributor
If all you want to do is check out what your equipment is producing, the best concentricity gauge is one that a friend owns. I have four of different brands, and all anyone that I know needs to do is bring over some sized cases and loaded rounds and we can look them over. If, on the other hand you like to own the tools to measure what you are curious about, and you want to look at cases and loaded rounds, I prefer the Sinclair unit. If you don't need to look at cases, and want to check loaded ammo and have the capacity to straighten it, the H&H is IMHO the best deal. I am not saying that you should straighten, just if you want to...
I own the RCBS and it does provide some data, though not good enough for the BR crowd.
Now I shoot only Lapua brass loaded in Redding dies in my Co-ax press and runout is always less than .002 which is good enough for this varmint shooter.
Same dies set up in my Hdy LNL progressive yield no greater than .003 runout.
Now that I know that I won't pull out the RCBS gauge again until the groups go to pot.
Now I shoot only Lapua brass loaded in Redding dies in my Co-ax press and runout is always less than .002 which is good enough for this varmint shooter.
Same dies set up in my Hdy LNL progressive yield no greater than .003 runout.
Now that I know that I won't pull out the RCBS gauge again until the groups go to pot.
bozo699
Gold $$ Contributor
Kaiser,
I have a new Hornady and the new sinclair and a old table with a glass table top.
The Hornady was a waste of money IMO. The sinclair is a good tool and for precise work I like it. for general checking of a batch of ammo or a box of factory stuff your using for hunting the glass table top works fine.
Wayne.
I have a new Hornady and the new sinclair and a old table with a glass table top.
The Hornady was a waste of money IMO. The sinclair is a good tool and for precise work I like it. for general checking of a batch of ammo or a box of factory stuff your using for hunting the glass table top works fine.
Wayne.
Not only cause they sponsor me....but the Bersin Tool works. Not that I use it to straighten, just check and make sure I don't have any issues with any other tooling.
KN, concentricity checking is a means to an end, it can drive you literally crazy, I did some very in depth checking recently, batched runouts powders, redding against wilson etc, overall the largest factor affectging the groups was me!
I have the hornady tool and the sinclair tool, they measure very differently, the hornady holds the tip and case head so if you were to imagine the skipping rope effect that is what you are measuring, plus you cannot check cases without a bullet seated, case neck concentricity is usually the largest factor in determining how low your bullet runout will be, however it is vey easy to straighten ammo once you have the hang of it.
the sinclair unit runs on a set of bearings it takes a bit more practice to use consistently but you can measure cases without a bullet seated plus with a bullet seated, if you compare the runout on a loaded round in the two different tools you get two totally different readings.
in the end the reason I check concentricity is because its another step in the process which adds to the overall saisfaction of making the best ammo you can and because its another toy to play with. hope this helps.
I have the hornady tool and the sinclair tool, they measure very differently, the hornady holds the tip and case head so if you were to imagine the skipping rope effect that is what you are measuring, plus you cannot check cases without a bullet seated, case neck concentricity is usually the largest factor in determining how low your bullet runout will be, however it is vey easy to straighten ammo once you have the hang of it.
the sinclair unit runs on a set of bearings it takes a bit more practice to use consistently but you can measure cases without a bullet seated plus with a bullet seated, if you compare the runout on a loaded round in the two different tools you get two totally different readings.
in the end the reason I check concentricity is because its another step in the process which adds to the overall saisfaction of making the best ammo you can and because its another toy to play with. hope this helps.
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