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Thread: Boolit loads in the old classics with Herco powder...................

  1. #1
    Boolit Buddy
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    Boolit loads in the old classics with Herco powder...................

    Recently was given an almost full caddy of Alliant Herco powder. I am thinking of loading some reduced load cast boolits for my 09' Argentine with 175 gr. lead boolits. Seems hard to find data for this powder? Anybody got any great ideas? Am down to about half a pound of RL7 which is my go-to powder, so wanted to work with something new until RL7 becomes available once again................

  2. #2
    Boolit Master


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    That makes two of us! I have started half to a full grain under the minimum of Unique. Would like to see data for 300 grainers in the 45 Colt. Not looking for barn burners, just accuracy! Got one three screw Blackhawk, and one NMB.

    Have gotten decent groups out of a 7mm BR XP-100, still playing with that, 10.5-11 grains, can't remember, will have to look at notes. It is holding about a half inch bigger group than them modern things. Butttttttt it very well could be the loose nut holding the grip. YMMV!!

  3. #3
    Boolit Buddy
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    Thanks much for your reply. Been going thru some stuff and ran across an early 70's Lyman cast bullet Handbook. The Herco loading for just about everything in .308 starts at 12.0 grs. and tops out at 15.5 grs. For 30'06 the numbers are 13.0 and 16.0 Grs. respectively. Hope this may help someone out there. Kind of not real crazy about trying to work up new, accurate loads with "strange" old powders, but who knows; it might be the pot of gold at the end of the rainbow!!!.............

  4. #4
    Boolit Master

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    I've got a canister of Herco with about 6 pounds left in it that I've been trying to find a use for. Thanks for the ideas.

  5. #5
    Boolit Master
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    I have used a lot of Herco in my Krag and 30-06. A good load for a plain base 175gr in the Krag is 9.5 to 10grs., and I was shooting 175 gr gas check bullets in the 30-06 with around 12.5 gr.
    I don't like to load those shotgun powders much above 13 grs, as my accuracy usually started to go away quickly. You might be surprised at how well 12.5 grains shoots, and not need any more velocity.

  6. #6
    Boolit Grand Master


    richhodg66's Avatar
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    Great with cast bullet loads in the '06. Ten shots at 100 yards. Ideal 311284 and 13 grains of Herco.
    Click image for larger version. 

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  7. #7
    Boolit Buddy
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    Wow; thats a really nice group!!! Did you use any type of filler below the bullet? Sure be glad when warm weather gets here........................

  8. #8
    Boolit Grand Master


    richhodg66's Avatar
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    No filler. Not needed with the fast burning powders like Herco and Unique, 2400, etc.

  9. #9
    Boolit Master


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    Nice group!
    I only have 4 pound jug, so I will have a good long time making it disappear!
    Eight grains seems to be a load that both Blackhawks like!

  10. #10
    Boolit Master


    frkelly74's Avatar
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    !3 gr works well in 8mm with 175 gr lee boolits and 308 win with 160 gr boolits.
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check