RCBS Case Master Gauging Tool

[SteveUSA1]

Thinking of buying one of these. Question I have is how do you check the neck thickness using this gauge?
Looking at the picture if seems you have to hand hold your case and rotate to read measurement. To check bullet run out I think you rotate case on roller plates.

Anyone use this product from RCBS? Your comments Please.

[Graybeard]

I honestly don't recall on the neck thickness measurement. I have one I used for a limited product review but just never got around to using again. If you really decide you want one let me know. I'll let you have mine in new condition well under market price as I have no plans to use it again. Matter of fact I have about quit reloading at all.

[Iowegan]

I have one of these handy gadgets. The kit comes with a "probe" that looks like a piece of wire with a 90 degree bend at one end. You insert the probe in the holder so the tip of the probe touches the gauge tip. You then zero the dial. When you insert a piece of brass between the probe and gauge, the dial will measure the thickness anywhere from the web to the mouth.

I use mine in the "run out" mode. Despite your best efforts, every now and then you will get a cartridge with excessive run out. This is more common in factory ammo than reloaded ammo. Any cartridge with excessive run out is sure to be a flyer. A great tool if you are loading for precision.