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Thread: 357 Mag load for rifle - Bullseye powder

  1. #1
    Boolit Buddy
    Join Date
    Jul 2007

    357 Mag load for rifle - Bullseye powder

    Wanting to load some 357 Magnum rounds for use in a Marlin 1894C 357 Mag rifle. Using Bullseye at the low end, 6.2gr per the Lyman Cast Bullet book. Bullet is a 158gr flat nose, from a Lee mold. Only loading 15 test rounds. After charging 6 cases I came to a question. With Bullseye being a faster powder, would it work alright in a rifle as opposed to a slower powder?

  2. #2
    Boolit Grand Master Outpost75's Avatar
    Join Date
    May 2013
    over the hill, out in the woods and far away
    Bullseye will work in a .357 rifle if you are willing to settle for a lower velocity load.

    I use Bullseye in my .357 rifles for low-noise, heavy bullet rook rifle type rounds, and also for use in .357 snubbies to approximate the performance of .38 Special +P ammo from .357 brass to reduce bullet jump, improve accuracy and to avoid the "crud ring" in the chamber from firing lots of .38 Specials in my .357s.

    Some info from my loading notebook may be helpful:

    .357 Magnum - Bullseye Powder Loads in Marlin 1894 Cowboy II 24" barrel, Bushnell 4x32mm

    Saeco #348 146-grain DEWC, seated to crimp groove in .357 case
    3.5 grains Bullseye 914 fps, 19 Sd, ten shots 1.58" at 50 yds.

    Winchester 158-grain JHP
    5.0 Bullseye 952 fps, 23 Sd
    6.0 Bullseye 1230 fps 24, Sd

    Hunter's Supply .358" 190-grain Lead FN, 1.59" OAL
    4.2 Bullseye 1078 fps 8 Sd, Avg. five consecutive 10-shot groups at 100 yards 2.88"
    The ENEMY is listening.
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    Keep it to yourself.

  3. #3
    Boolit Buddy
    Join Date
    Jul 2007
    Good info! I sure do appreciate it!

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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