Skeet's Shotgun Choke Barrel Micrometer Ga 12, 16 Ga
Is that gun in proof?
Skeets shotgun bore gauge standard length 12.5” reading depth | eBay
By Sword and Musket » Cased Muzzle Loading 16 bore Shotgun by George & John Dean
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A Shotgun's Gauge
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Brass Choke & Chamber Length Gauge from CT Shotgun Mfg. Co. for sale
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Overall/Barrel Length Measuring Device – Precision Forensic Testing
