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12g subsonic steel loads


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Two here. EX metro gun .

  1. Heavy Goose
    • Federal 3" 12 Guage Hull
    • Federal 209-A Primer
    • 19 grs Alliant "Steel" Powder
    • 1 1/4 oz. T Steel or other type of heavy, non-toxic shot
    • 3" steel shot wad, or BP Pattern Driver
    • MV 983 fps
    • Pattern with Modified Choke: 89% @ 40 Yards

  2. Goose / Duck
    • 2 3/4" Federal 12 Gauge Hull
    • Federal 209-A Primer
    • 20 grs Herco Powder
    • 1 1/4 oz. T Steel(Goose) or BB Steel (Duck)
    • MV 869 fps
    • Pattern with Modified Choke: 91.8% @ 40 Yards

  3. New 20 Gauge Data (Use with Metro Gun 20 Gauge Adapter System)
    • Federal 3" 20 Gauge Hull
    • 209 Primer (Any)
    • 12 grs Hodgdon "Longshot" Powder
    • RS or any other steel shot wad
    • Felt under shot wad, as required for correct crimp
    • MV 887 fps
    • Pattern with Modified Choke: 88% @ 40 yards

IMPORTANT! All of these loads are reduced-powder charges that are enough to allow for changes in wad, shot type, and under shot wads to adjust for correct crimp levels.

DO NOT exceed these powder amounts as it will greatly increase sound, and pressure will become unstable.

Be sure you understand the principles of handloading before you attempt to reload any ammunition. Any deviation from these principles can result in SERIOUS INJURY OR DEATH!

If you have any questions, please contact us.

Metro Gun Systems

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  • 3 weeks later...
4 hours ago, Rimfireboy said:

I wouldn’t expect them to be very effective.

With the right size of shot, I could see them being reasonable effective, especially if the quoted patterns were achieved. My concern would be firing thick plastic wads through a moderated shotgun - they don't go through particularly well.

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The point raised about steel shot wads and porting is a good one, i quoted EX metro gun loads these are longer barrels  or barrel extensions which have no ports so no fouling.  If you could find an old Marlin goose gun you could get the same effect as a metro gun and the full choke at those speeds would be safe.

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