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Thread: 458 Socom cast p/c 350 & 405gr load data ???

  1. #1
    Boolit Buddy
    Join Date
    Feb 2011

    458 Socom cast p/c 350 & 405gr load data ???

    Hey fellas!
    Cast and powder coated bunch o 350&405gr boolets for the 458 Socom.
    Need some load data these are for plinking.
    Thinking about using lil gun, but have lots of powder to work with.
    In advance....
    Thank you

  2. #2
    Boolit Buddy
    Join Date
    Mar 2013
    I used 30.0gr of AA1680 with 405gr FN cast. Haven't chrony'd yet since I couldn't get a good read today.
    But gettin MOA accuracy and decent feeding with 7rds in a 30rd GI mag.
    Still a work in progress since I just was able to start tinkering with it. Good thump on the backstop, but recoil is very mild

    ETA: I've been using National Bullet Company (out of business) Copperized Cast, but it looks to be a common profile
    Last edited by lksmith; 08-03-2018 at 11:03 PM.

  3. #3
    Boolit Mold bsev81's Avatar
    Join Date
    Aug 2016
    South Carolina
    Using the NOE HTC 354 grain bullet I started with 28 grains of W296, yielded 1420 fps in my 10.5 barrel.

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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