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Thread: Hercules Herco load data

  1. #1
    Boolit Master
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    Hercules Herco load data

    Someone please correct me if I'm wrong but from what I've read here, I can use the current load data for Alliant Herco powder when loading with old Hercules Herco powder (red, green & orange carboard can). I have a 1/2 lb. to use up.
    I looked at Alliant website, not much data there, they list one load for .45acp, nothing for 9 mm.

  2. #2
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    Lloyd Smale's Avatar
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    yes you can
    Soldier of God, sixgun junky, Retired electrical lineman. My office was a 100 feet in the air, closer to God the better

  3. #3
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    ↑↑↑↑↑↑↑↑ What he said.
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  4. #4
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    You can find plenty of data for Herco in numerous pistol cartridges in the older alliant manuals found here.
    http://www.castpics.net/LoadData/Fre...M/Alliant.html
    "Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive. It would be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience."
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  5. #5
    Boolit Master
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    Lloyd & Jake, thanks for the confirmation
    fecmech, that's just what I needed. Thanks

  6. #6
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    For 9mm.. I like 3.6 grs of Herco with a 147 gr epoxy coated RN.. Someone here I think said treat is like a slow batch of Unique.

  7. #7
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    yep slow batch of unique.
    if I don't find data in all my books I use unique data and move from there.
    I'm still working over the second metal squeeze pop top can in the 357.
    another 4-5,000 rounds and i'll be about done with it.
    it's all an educated guess,,,, till the trigger is pulled.

    this opinion brought to you by mister low-tech solution..

  8. #8
    Boolit Master
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    I've shot a lot of it pretty close to unique. My go to powder for cast bullets in my handguns. Both 44 and 357.

  9. #9
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    I'm working on my second 8lber ! 12 gauge field loads, 9 mm,38 spcl wc,40 S&W, 357 magnum,45 ACP, it's just a great powder! I'm sure I'll find other uses as I go! Just my .02
    I firmly believe that you should only get treated by how you act, not by who or what you are!!

  10. #10
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    The bummer thing about it is that Alliant sort of treats this old powder with disdain, there is a lot less data out there for Herco as opposed to some newer powders.. Herco shined in a lot of those data slots.

  11. #11
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    Just yesterday shot a bunch of 357 with Herco out of a Rossi carbine that I had just installed a Marbles tang sight on (replaced the Lyman due to NO windage adjustment).

    I like Herco ALOT.

    New sight worked 'muy bueno', too!
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  12. #12
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    If you can find old Alliant and even Hercules Data manuals, they have more loads listed for Herco.

  13. #13
    Boolit Master dougader's Avatar
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    I have a few pages from an older Sierra manual. There was a time when Herco was considered THE powder for 9mm.

    I used to load 6.8 grains Herco with the Sierra 115 jhc bullet.

  14. #14
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    me too. If offered both id take a keg of it before id take a keg of unique
    Quote Originally Posted by sundog View Post
    Just yesterday shot a bunch of 357 with Herco out of a Rossi carbine that I had just installed a Marbles tang sight on (replaced the Lyman due to NO windage adjustment).

    I like Herco ALOT.

    New sight worked 'muy bueno', too!
    Soldier of God, sixgun junky, Retired electrical lineman. My office was a 100 feet in the air, closer to God the better

  15. #15
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    I use it in 380, 9mm, 38 sp, 357 mag, 357 Max, 45 acp, 308 subsonic, 20 gauge, 12 gauge.
    I just bought an extra 8 pounder last week. That should give me enough to load 30,000 rounds.
    Now I just need more lead and primers.
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  16. #16
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    Quote Originally Posted by Lloyd Smale View Post
    me too. If offered both id take a keg of it before id take a keg of unique
    Funny, but I happened to stop by KyGunCo right when the big post Sandy Hook powder scare was in full swing. The only big jugs of powder they had left were a couple of 8lb Promo and a whole bunch of 4lb jugs of Herco. There may have been a dozen of them. That's the only time I've ever seen a 4lb jug of Herco in a gun shop.

    I took home one of each, but I haven't gotten around to opening the Herco yet. I don't use all that much Unique any more either--as I do most of my handgun loading on a progressive these days I have sort of migrated away from the old big flake powders and toward either ball or smaller grained stuff that meters well.

    Is Herco cleaner than Unique? I remember Dean Grinnell saying he liked it as a 9mm powder.
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  17. #17
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    It seems to meter just fine for me in my Dillon 650. I like it for heavier bullet loads in 9mm (for revolver). I know at least one other person using Herco for his Pistol Cal Carbine as it does not pressure spike like some of the faster loads. I loaded some jacketed bullet loads in 40 cal for night shoots and it gives a dull orange flame as opposed to the higher nitro flashy fast burners of today.

  18. #18
    Boolit Buddy dbarry1's Avatar
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    Quote Originally Posted by fecmech View Post
    You can find plenty of data for Herco in numerous pistol cartridges in the older alliant manuals found here.
    http://www.castpics.net/LoadData/Fre...M/Alliant.html
    Nice resource right there.

  19. #19
    Boolit Master Rodfac's Avatar
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    Originally Posted by fecmechYou can find plenty of data for Herco in numerous pistol cartridges in the older alliant manuals found here.

    http://www.castpics.net/LoadData/Fre...M/Alliant.html
    Pay very close attention to the Min OAL lengths in each year listing. They vary considerably and the safe charge weights vary by as much as a full (1.0) grain or more. I checked Herco for 1987 vs. 2000 in 9mm using 115 gr FMJ's. Be careful!!! Rod

  20. #20
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    I use LOTS of Herco powder. 12 and 28 gauge shotshells, magnum revolver loads at 950-1100 FPS with plain-based castings, and scattered autopistol taskings make up the bulk of Herco's work for me. I could load every handgun caliber I own very capably using WW-231, Herco, and 2400--and most cast bullet rifle loads as well.
    I don't paint bullets. I like Black Rifle Coffee. Sacred cows are always fair game. California is to the United States what Syria is to Russia and North Korea is to China/South Korea/Japan--a Hermit Kingdom detached from the real world and led by delusional maniacs, an economic and social basket case sustained by "foreign" aid so as to not lose military bases.

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