Most Inexpensive Concentricity Gauge Ever!

The need for concentricity gauges is debateable, so it's not something most reloaders want to spend a lot of time on.
But measuring the concentricity of your loads can answer some interesting questions at times so, if you can make one quite inexpensively, why not? This video, recorded in a design-as-you-go style, shows you how, using items you can find around your home. Will it work? You'll see at the end.

The basic run-out gauge unit shown in this video can be found at: https://www.amazon.ca/gp/product/B012P5G2ZY

00:00 - Why I need a run-out gauge
02:01 - The start of a solution
05:50 - The challenge of making a cartridge cradle
06:40 - The "Aha!" moment
10:35 - Making the cradle
11:39 - The need for a bumper
15:47 - Putting it all together

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