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Thread: Has anyone a load for Subsonic 12 Gauge?

  1. #1
    Resident Curmudgeon Kiwi Sapper's Avatar
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    Has anyone a load for Subsonic 12 Gauge?

    I have Googled but can not find any posts here or elsewhere for loads using the powders I have which are ADi APS450 and AP70N.

    I don't want to buy a third powder, (but if I have to, then I will if I can source it :>) and I do want to be below 1000 fps.

    Oh, and no, although I have Black powder, I don't want to go there.with this gun. But on the subject of Black Powder, does anyone know the FPS that B.P. 2F creates in a 12 gauge?

    Thank You.
    “There was a moment's suspense while Conscience and Sheer Wickedness fought the matter out inside him, and then Conscience, which had started on the encounter without enthusiasm, being obviously flabby and out of condition, threw up the sponge.”

  2. #2
    Member Marty Henry's Avatar
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    Save a little bother and get some of target products mouse fart smokeless cowboy action loads think they do 950fps
    As to bp it depends on how much you put in. You can still find dram equivalents printed on some modern ammo or look up an odd shotgun loading manual.
    The old maxim was equal VOLUMES of powder and shot.
    Last edited by Marty Henry; 17-03-2021 at 02:50 PM.
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  3. #3
    Member Sarvo's Avatar
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    Does forgetting to check the Powder bottle and loading them without powder count as subsonic :-)
    Very quiet - not a lot of kill power but :-(

  4. #4
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    Loading BP is more about pattern than velo, I'd generally say you're close to the "standard" 1170 fps.

    You can do some beer-mat maths. Whatever your current load/velo. Say 28gn ap70 for 1170... divide FPS by grains powder =42 fps/gn

    so target velo 1050 divide by 42 =25gn. Obviously put your own numbers in.

    shotguns pretty fae to down-load as you can take space up with wadding, or have your shot column lower in the shell.
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  5. #5
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    NB unless you have a supressor you're still going to have the whomp of muzzle blast.
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    Quote Originally Posted by 308
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  6. #6
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    Quote Originally Posted by mimms2 View Post
    NB unless you have a supressor you're still going to have the whomp of muzzle blast.
    That is exactly what i do have and I'm looking to remove the "CRACK" of the sound barrier breaking as well.
    The only unknown is if there will be enough energy to recycle the semi without the "crack". Time and experience will tell. :>)
    “There was a moment's suspense while Conscience and Sheer Wickedness fought the matter out inside him, and then Conscience, which had started on the encounter without enthusiasm, being obviously flabby and out of condition, threw up the sponge.”

  7. #7
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    Quote Originally Posted by Sarvo View Post
    Does forgetting to check the Powder bottle and loading them without powder count as subsonic :-)
    Very quiet - not a lot of kill power but :-(
    Whisper quiet I'd have thought.... apart from the bad language turning the air blue.
    “There was a moment's suspense while Conscience and Sheer Wickedness fought the matter out inside him, and then Conscience, which had started on the encounter without enthusiasm, being obviously flabby and out of condition, threw up the sponge.”

  8. #8
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    Quote Originally Posted by Marty Henry View Post
    Save a little bother and get some of target products mouse fart smokeless cowboy action loads think they do 950fps..........................
    I have discussed with "those in the know" and the general opinion is that the cowboy powder has less recoil but not is not subsonic.




    Quote Originally Posted by Marty Henry View Post
    ..............As to bp it depends on how much you put in. You can still find dram equivalents printed on some modern ammo or look up an odd shotgun loading manual....The old maxim was equal VOLUMES of powder and shot.
    This "Stupid Boy" should have consulted his Lyman 2 cnd edition before bothering others by asking. Duh.
    None of the 12 g loads are less than 1000 fps
    “There was a moment's suspense while Conscience and Sheer Wickedness fought the matter out inside him, and then Conscience, which had started on the encounter without enthusiasm, being obviously flabby and out of condition, threw up the sponge.”

  9. #9
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    Thank You Chaps, all settled.

    I now have the ADI recommendation of a powder and for a 1 1/4 oz load, four different measures to which produce from 851 fps to 985 fps. Well within my desired range.
    Marty Henry and Micky Duck like this.
    “There was a moment's suspense while Conscience and Sheer Wickedness fought the matter out inside him, and then Conscience, which had started on the encounter without enthusiasm, being obviously flabby and out of condition, threw up the sponge.”

 

 

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