Home Forums Reloading Big Game Rifles Runout/Concentricity Gauge Recommendation

I've been looking at the Neco, Sinclair, 21st Century, H&H, Accuracy One, etc....

Do your recommended any one of these over the others?

Following.

I sold an RCBS to buy a Sinclair recently. Was a good move.

The 21st Century one looks like it would be even better, but not all that necessary.

I use the Sinclair and like it.

John

sinclair

I'm thinking I will go with a Sinclair heard great things about them

Does anyone use the 21st Century?

+1

I should have bought one long ago. I've been surprised sometimes at some cheap dies making straight ammo. I've also found some bullet seater-stem and bullet profile incompatibilities that produced wonky ammo. Who knows how many times I discounted a load in the past because I got fliers, when it was actually runout that was the problem?

I haven't since I've had a Sinclair for a while. But it does look like a nice piece of equipment, and I do have a 21st Century neck turning tool which is first class so I'd feel confident buying other gear from 21st.

The one I generally recommend for a first-timer is the RCBS Casemaster, since it also measures neck thickness, a critical component in several aspects of accuracy, including sizing cases straightly.

Also have a Sinclair and a NECO. The Sinclair is smoother than the RCBS, but doesn't measure any more accurately. The NECO measures neck (and case-body) thickness as well, but is slower to use. Which is why my Casemaster still gets more use than the others.

I seldom use it, but I've had a Sinclair for several years. Easy to use and I assume the readings are accurate.

I haven't used the Sinclair so can't comment on it, but I can't see a think wrong with my RCBS

I have a Sinclair and like it fine. Haven't used any others.

My Sinclair gauge is the least used tool on my bench. If my rifles are shooting well, I don't gauge the cartridges. I used to do this regularly and very seldom found anything with a runout of more than .003. That's probably too much for benchrest guys, but when you're getting small groups from a hunting or varmint rifle, I'm satisfied with it. I use a Co-Ax press to load all rifle ammo; whether that has a bearing on anything or not, I don't know.

For those of you with experience in this area: if you're dealing with runout alone as a factor that affects accuracy, how much runout does it generally take to become a problem?

Another vote for Sinclair

I got the Hornady. I've checked mayeb 200 rounds and never found one over .003". Wish I'd of saved the money.

All I've ever used was an RCBS, just curious as to why some guys who've used both like the Sinclair better?

To some, it's worth it to know your dies are set up for minimal run-out. I have no regrets in having/using and keeping my Brown precision:



Might just be me though. I like accuracy and feel I owe it to the critter I'm pulling the trigger on....

lotech,

As I recall, the directions with the RCBS Casemaster suggests that runout of more than .005 inch won't result in better accuracy with most big game rifles, especially with full-length sized brass. They also suggest .003 inch as maximum for varmint rifles using neck-sized brass.

I've experimented considerably with various run-out gauges since about 1990, when I first acquired a Casemaster. I've found the RCBS directions (as well as I can remember them from 1990, anyway) were pretty much correct. I have also found that as much as .001 runout makes a difference in accuracy in my benchrest rifle--and that runout of .006 or more can make noticeable difference in group size in factory big game rifles.

So, as usual, it all depends.