The sweet 16 gauge shotgun is the most logical of all the gauges. Terry Weiland explains why has it fallen from popular use.
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16-Gauge Shotguns - Everything You Need to Know
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Why has the sixteen gauge shotgun fallen out of favor? - Quora
The Sweetness of 16 Gauge: Nostalgia, Nonsense or Something More? - The Truth About Guns
What are the advantages of a 16-gauge shotgun? - Quora
Facts needed on a 16 gauge for Home defense. : r/guns
Why is the 16 Gauge Shotgun Dying?