Which two shotgun gauges are by far the most common?

12 and 20 gauge.

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  1. 10 and 16 gauge
  2. 12 and 20 gauge ✔
  3. 28 and 32 gauge

Why: The 12 gauge and 20 gauge bores are the most common shotgun gauges in wide use.

Huh, didn't know that: The 12 gauge and 20 gauge bores are the most common shotgun gauges in wide use.

The dad joke
Twelve and twenty really gauge the market.
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References

Answer: 12 and 20 gauge. The 12 gauge and 20 gauge bores are the most common shotgun gauges in wide use.

  1. Shotgun en.wikipedia.org/wiki/Shotgun
    though the 12-gauge (18.53 mm or 0.729 in) and 20-gauge (15.63 mm or 0.615 in) bores are by far the most common
    Checked 2026-11-07.

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