i would like some opions on different Concentricity Gages. i`ve been looking at the sinclair and rcbs. wondering who`s is best
considering the sinclair doesn`t measure neck thickness

I have the Sinclair, and prefer it to the RCBS in terms of ease of use. You can tell the price difference in the build quality. Both the RCBS and the Neco are a bit more versatile. I use a separate gauge for neck wall variation (also Sinclair).

- mike

i was thinking that it might be best to get a separate gauge for the neck thickness. thanks alot for your help

Have you looked at the NECO gage Really handy lots of ways to use it. It does have a fairly steep learning curve. At least I found it so.
It measures neck concentricity, loaded round,and bullet. Also case wall thickness variation. And the "bow" or "bananna" shape of a fired case.

muck

i went ahead an ordered the sinclair
thanks

It's a good product, you won't disappointed.

I don't use the concentricity gauge on every single round I load. I use it as a mechanism to verify my loading setup. How straight can I size my cases, how straight can I seat my bullets... Once verified for a particular caliber/die set, load away...

I use the case neck wall variation gauge to sort brass - substitutes neck turning in my reloading world.
- mike

I use the stupid thing. If you want to buy a "as new" neco for...$150. toddbarrie@yahoo.com

I have been using the RCBS unit for years and it works for me, especially after I added the Fowler digital gage that Sinclair sells.

I would add for the benefit of anyone thinking about buying ANY con gage to use making ammo for factory off the shelf rifles this:
One problem with factory rifles is that the bolt face is not trued to the chamber during manufacture. This means that any cartridges used in these rifles will have chances of entering the chambers concentricly somewhere between few and none. When the cartridge is fired, the case head strikes the bolt face and conforms to that shape somewhat. A case like that then reloaded out of square is now doubly out of alignment. Thus, the value for dollar spent on things like con gages for that use is greatly diminished. Money might be better spent experimenting with powders and bullets for factory guns. A lot of people say that the improved accuracy claims made by Richard Lee for his collet style neck die are true and that it is the best thing for improving accuracy in factory rifles.