12 Bore vs 20 Bore ?!

Published on November 29, 2018
Duration: 7:50

This guide details a comparison between 12 bore and 20 bore shotguns, presented by Jon from TGS Outdoors. It covers bore size basics, load versatility, ballistics, recoil, and market perceptions. A field test demonstrates that for standard loads, the 20 bore is not at a significant ballistic disadvantage compared to the 12 bore, challenging common assumptions.

Quick Summary

A 12 bore shotgun has a larger bore diameter (0.729 inches) than a 20 bore (0.615 inches), allowing for heavier loads up to 63g. While the 20 bore typically handles 21g-34g, pattern tests show comparable pellet counts to the 12 bore for standard loads, making it a versatile option. Recoil is subjective, influenced more by gun weight and fit than bore size alone.

Chapters

  1. 00:00Introduction: 12 vs 20 Bore
  2. 00:22Bore Size Basics Explained
  3. 01:08Load Selection and Versatility
  4. 02:03Ballistics and Shot Columns
  5. 02:59Recoil and Shooter Preference
  6. 03:54Market Perceptions of 20 Bore
  7. 04:11Field Pattern Testing Setup
  8. 05:48Results and Conclusion

Frequently Asked Questions

What is the main difference between a 12 bore and a 20 bore shotgun?

The primary difference lies in their bore diameter. A 12 bore has a larger internal barrel diameter (0.729 inches) than a 20 bore (0.615 inches). This allows the 12 bore to handle heavier loads and offers greater versatility for magnum cartridges, while the 20 bore is typically lighter and can be a capable option for standard loads.

Does a 20 bore shotgun have less effective range or pellet count than a 12 bore?

Not necessarily for standard loads. Field tests show that with similar loads (e.g., 1 oz or 28g) and chokes, a 20 bore can deliver comparable pellet counts and pattern density to a 12 bore at typical shotgun ranges like 25 yards.

Is recoil significantly different between a 12 bore and a 20 bore shotgun?

Recoil is subjective and depends heavily on the firearm's weight and fit, not just the bore size. A lighter 12 bore shotgun might produce more felt recoil than a heavier 20 bore shotgun when both are firing similar loads. Proper gun fit is crucial for managing recoil in either gauge.

What are the typical load ranges for 12 bore and 20 bore shotguns?

A 20 bore shotgun typically handles loads ranging from 21g to 34g. The 12 bore shotgun offers a broader spectrum, accommodating loads from 21g up to 63g, especially with 3.5-inch magnum shells, providing greater flexibility for various shooting applications.

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