The Shotgun Magazine Tube Conundrum

Published on May 4, 2025
Duration: 1:04

This guide, presented by a professional firearm retailer from GUNBROS, analyzes the common conundrum of shotgun magazine tube lengths. It highlights the capacity and aesthetic differences between 20-inch and 18.5-inch barrel shotguns, specifically focusing on how magazine tube length impacts shell capacity and its relation to the muzzle. The expert questions the underutilization of space on shorter-barreled models.

Quick Summary

Expert analysis from GUNBROS compares 20-inch and 18.5-inch barrel shotguns, highlighting magazine tube length differences. 20-inch models typically offer 7+1 capacity with flush tubes, while 18.5-inch models may be limited to 5+1 due to shorter, non-flush tubes, leaving unused space at the muzzle.

Chapters

  1. 00:00Barrel Lengths and Capacities
  2. 00:23The 18.5-inch Magazine Tube Conundrum

Frequently Asked Questions

What is the typical capacity difference between 20-inch and 18.5-inch shotguns?

A 20-inch barrel shotgun with a flush-fit magazine tube usually holds 7+1 rounds of 2.75-inch shells. In contrast, an 18.5-inch barrel shotgun often has a shorter, non-flush magazine tube, limiting capacity to 5+1 rounds.

Why do some shotguns have magazine tubes that don't reach the muzzle?

On some 18.5-inch barrel shotguns, the magazine tube is intentionally shorter than the barrel, ending before the muzzle. This can result in a gap, limiting capacity and affecting the shotgun's overall aesthetic appearance.

Can the magazine capacity of an 18.5-inch shotgun be increased?

Yes, the unused space before the muzzle on an 18.5-inch shotgun with a non-flush magazine tube can often be utilized by installing an aftermarket magazine tube extension, potentially increasing capacity and improving the visual line.

What brands are discussed in relation to shotgun magazine tube lengths?

The video specifically discusses Mossberg shotguns, referencing models like the Mossberg 590 (often with 20-inch barrels and flush tubes) and the Mossberg 500 (frequently featuring 18.5-inch barrels with shorter tubes).

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