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Thread: Powder for a 357 at 100 yards?

  1. #1
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    Powder for a 357 at 100 yards?

    I'm trying to develope a load for shooting copper washed 159gr heads out to 100 yards.
    I've tried Unique up to 8.0gr load and still shooting a few inches low.
    I have GM3 powder, but not sure about loads at that distance.

    I would like to get another powder to try, partly for perhaps a better load and these days I have found it's good to have a choice of powders in each calibre you load for in the event of shortages.

    Any opinions on Blue Dot or Vhit N320 at 100 yards and what weight of powder?
    6.5 55 SWEDE.223 HOWA VARMINT NIKON 8X32X50 -.22LR CZ STYLE-16" .17 HMR CZ AMERICAN-16" SIMMONS AETEC-12G BERETTA A.302,AYA NO 4,BAIKAL O&U

  2. #2
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    I use H110 and it does well with jacketed bullets, have a 'small deer' legal load at 1270 ft-lb with 110 gr bullets so it has plenty of poke, also not on the REACH list
    Thanks for looking

  3. #3
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    You say you weren't happy with 8 gns of Unique??? 6.5 gns of Unique works OK in my 24" barreled 357.
    Pistol & Rifle Shooting in the Highlands with Strathpeffer Rifle & Pistol Club. <StrathRPC at yahoo.com> or google it.
    No longer Pumpin Oil but still Passin Gas!

  4. #4
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    357 powders

    Very interesting!

    With the same type Marlin, and using 8grs Unique with a copper washed 159gr head with CCI small pistol primers, Starline cases, my rounds are approximately 2 to 3 inches low at 100 yards.

    I wonder why the difference? Do you pack the cases at all?
    6.5 55 SWEDE.223 HOWA VARMINT NIKON 8X32X50 -.22LR CZ STYLE-16" .17 HMR CZ AMERICAN-16" SIMMONS AETEC-12G BERETTA A.302,AYA NO 4,BAIKAL O&U

  5. #5
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    Quote Originally Posted by CROWMAN View Post
    Very interesting!

    With the same type Marlin, and using 8grs Unique with a copper washed 159gr head with CCI small pistol primers, Starline cases, my rounds are approximately 2 to 3 inches low at 100 yards.

    I wonder why the difference? Do you pack the cases at all?
    That's what the rear sight is for.
    Is the grouping OK, that's the important bit!
    Pistol & Rifle Shooting in the Highlands with Strathpeffer Rifle & Pistol Club. <StrathRPC at yahoo.com> or google it.
    No longer Pumpin Oil but still Passin Gas!

  6. #6
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    357 powders

    Due to age, eye sight not good enough for using rifle sights I'm afraid, so a scope is used.

    Would still be interested in other powders that forum members use for this distance.
    6.5 55 SWEDE.223 HOWA VARMINT NIKON 8X32X50 -.22LR CZ STYLE-16" .17 HMR CZ AMERICAN-16" SIMMONS AETEC-12G BERETTA A.302,AYA NO 4,BAIKAL O&U

  7. #7
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    I use 6.8 grains of Unique with a 158gr cast bullet (roundnose and semi wadcutter) at 100 yards.

    I use 7.2 grains of unique with a 158gr copper jacketed hollow point bulllet for foxes. Tested at 100 yards and group ok.

    If the groups are good but is shooting low then adjust your sights.

  8. #8
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    I used to use Blue Dot in a Marlin
    N320 I used for low target loads

  9. #9
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    Although Ive yet to try this, Ive been recommended RS30 for .357 with powder charges around 12.5gr - 16gr (158gr Heads).
    BSA Mercury .22, Steyr SSG69, Enfield No4 Mk1*, Schmeisser AR15 Ultramatch, 1938 Mauser KKW K98 Trainer.

  10. #10
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    357 powders

    Many thanks, I'll add this to the list of other powders to investigate and possibly try.
    6.5 55 SWEDE.223 HOWA VARMINT NIKON 8X32X50 -.22LR CZ STYLE-16" .17 HMR CZ AMERICAN-16" SIMMONS AETEC-12G BERETTA A.302,AYA NO 4,BAIKAL O&U

  11. #11
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    Still can’t understand why you are insisting that a different load is the answer to your problem. If your scope has run out of elevation adjustment there are many ways to increase this available to you. Hawke do a very moderately priced elevation adjustable mount, there are a variety of inserts available and even slipping a piece of an old negative under the rear mount. Any of these make far more sense than randomly trying different powders which are unlikely to have the desired effect.

  12. #12
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    Quote Originally Posted by chrisbaker42 View Post
    Still can’t understand why you are insisting that a different load is the answer to your problem. If your scope has run out of elevation adjustment there are many ways to increase this available to you. Hawke do a very moderately priced elevation adjustable mount, there are a variety of inserts available and even slipping a piece of an old negative under the rear mount. Any of these make far more sense than randomly trying different powders which are unlikely to have the desired effect.
    as above

  13. #13
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    357 powders

    Thanks to all, have sorted the scope problem, so I am ok now with Unique.
    Part of my initial post was for alternative powders in case of non availability in obtaining Unique.
    Several forum members have kindly suggested alternatives.
    6.5 55 SWEDE.223 HOWA VARMINT NIKON 8X32X50 -.22LR CZ STYLE-16" .17 HMR CZ AMERICAN-16" SIMMONS AETEC-12G BERETTA A.302,AYA NO 4,BAIKAL O&U

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