Lee PrecisionInline FabricationRotoMetals2StainLess Steel Media
Titan ReloadingGraf & SonsMidSouth Shooters SupplyADvertise here

Results 1 to 5 of 5

Thread: Fryxell alloy for most boolits

  1. #1
    Boolit Bub
    Join Date
    Dec 2017
    Posts
    47

    Fryxell alloy for most boolits

    From the book, it seems like COWW + 2% tin is kind of all-purpose alloy. Would this also be a reasonable formula for .30 caliber GC boolits up to, say 2500 fps? With adequate lube, of course.

  2. #2
    Boolit Master


    Larry Gibson's Avatar
    Join Date
    Jul 2005
    Location
    Lake Havasu City, Arizona
    Posts
    16,318
    Quote Originally Posted by Steven66 View Post
    From the book, it seems like COWW + 2% tin is kind of all-purpose alloy. Would this also be a reasonable formula for .30 caliber GC boolits up to, say 2500 fps? With adequate lube, of course.
    In most circumstance with commercial 30 caliber rifles.....no.

    In 14" twist barrels reasonable accuracy can be had at 2500 fps that alloy if cast and loaded correctly.

    Otherwise a harder alloy is needed for best accuracy. With a lead/antimony/tin ternary alloy reasonably consistent accuracy, especially past 50 & 100 yards can be obtained at upwards of 2200 - 2300 fps. However, most find best accuracy in the 1700 - 1950 fps range with most 10" twist 30 caliber rifles.
    Larry Gibson

    “Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
    ― Nikola Tesla

  3. #3
    Boolit Master

    Wayne Smith's Avatar
    Join Date
    Mar 2005
    Location
    Hampton Roads, Virginia
    Posts
    10,094
    COWW+ 2% tin is a tertiary alloy. Possibly quardinary alloy if the WW have arsnic. Water drop those and they are good for 2300fps, at least in greater than .30 caliber (8mm Steyr, 9.3x57).
    Wayne the Shrink

    There is no 'right' that requires me to work for you or you to work for me!

  4. #4
    Boolit Master


    Soundguy's Avatar
    Join Date
    Oct 2016
    Location
    N Central Florida
    Posts
    1,202
    I'm running lyman #2 and gc for 30/35 caliber

  5. #5
    Boolit Master
    Join Date
    Feb 2006
    Location
    Peepels Republik of Nu Jork
    Posts
    355
    The commonly found 10" rate of twist in .30 caliber guns is generally the limiting factor. WDWW, Lyman #2 and linotype can push the velocity limit upward, assuming proper boolit, lube, loading procedure, etc. You should read this thread, if you haven't done so yet:

    http://castboolits.gunloads.com/show...-rifle-boolits

    Also, Larry Gibson has many posts that will be of value to you, use the forum's search function to locate them.

    For my purposes I use an alloy of 94-3-3 which I mix myself from lino, pure lead and 50-50 solder. In essence, it is WW alloy with 2% tin added, about 12 BHN. It works well for pistol and rifle boolits, tho' I don't push my rifle loads much past 1900 due to the 10" twist.
    “Now and then we had a hope that if we lived and were good, God would permit us to be pirates.”

    ― Mark Twain

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
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