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Mossberg 590A1 Mariner Takes On Steel Animal Targets With Slugs

November 8, 2026

In a video from hickok45, a Mossberg 590A1 Mariner loaded with slugs is put through a "big game hunt" on steel targets shaped like a buffalo, a ram, a turkey and a hog, showing how the pump shotgun handles as a slug gun on the channel's steel range.

Key points

  • The gun: The 590A1 Mariner in the video holds six rounds plus one, and hickok45 notes that Mossberg also offers a 21-inch barrel version with a larger magazine.
  • Slug hits: Rifled slugs visibly rock and knock the steel animal targets, and hickok45 comments repeatedly on how hard the hits land.
  • Reloading: He pauses several times to top off the magazine tube and chamber a round, checking the safety and his round count each time.
  • Defensive use: hickok45 closes by calling the 590A1 Mariner a strong option for defense, apart from its showing on the steel "game" course.

Quick take

hickok45 treats the session as an informal, playful function check rather than a detailed review, using the big-game theme to show the Mariner feeding slugs and knocking down the steel animal targets.

Watch the full video: hickok45