Bore gauges
Fred, the Hosford is my favorite because you can measure any bore between .500 and .800 without changing heads and it reads directly from the analog dial face without adding or subtracting hundredths and thousandths like the Skeets analog models. It is the "Cadillac" model of bore gauges and sells for around $800. The Skeets will get the job done at 1/4th to 1/8th the price but (for me) is not as fast or convenient and requires slightly more dexterity. Chubbs and Galazans are in the intermediate price range (depending on which Galazan model you are talking about). Factory digital readout gauges are generally about 4 times as expensive as the same device with an analog scale.
It really comes down to how many barrels do you plan to measure at a time and how much are you willing to pay for convenience. Which gauge guns do you plan on measuring? .410s usually require a separate arbor/gauge and 4 and 8 bore instruments are mostly custom built.
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