Inline FabricationStainLess Steel MediaTitan ReloadingMidSouth Shooters Supply
Ballisti-CastLee PrecisionRotoMetals2Graf & Sons
Results 1 to 9 of 9

Thread: W 748 Powder "Issues"

  1. #1
    Boolit Master Maven's Avatar
    Join Date
    Mar 2005
    Posts
    3,712

    Exclamation W 748 Powder "Issues"

    Not wishing to hijack another thread (about #311413 & W 748 powder), I found the following statement and wish to comment on it:

    "748 shows a lot of promise in cases of the 308 and x 57 families as far as velocity and lower pressures..." (runfiverun)

    That isn't the best advice, although it is well-intentioned. Here's why: If you load for the 8 x 57mm Mauser, Winchester's reloading pamphlet specifically warns against using reduced loads of W 748. Lyman apparently hadn't got that message because it specifically recommended and continues to recommend using 36grs. W 748 with #323470 and 30grs. with #323471. For the .308Win. and other similar cartridges, maybe, but it wouldn't be my first choice. For the 8 x 57mm, NEVER.

  2. #2
    Moderator Emeritus
    JeffinNZ's Avatar
    Join Date
    Sep 2005
    Location
    Christchurch, New Zealand
    Posts
    7,011
    It's a great powder that has served me well but I have really only ever loaded it 90% + load density in .223, .303 Brit, .303 Pygmy.
    Thermal underwear style guru.
    "Exclusive international distributor of Jeff Brown Hunt Club clothing."
    Supplier to the rich(?) and infamous.

    Cheers from New Zealand

    Jeff.

    Floyd Files.
    Antipodians

  3. #3
    Moderator


    runfiverun's Avatar
    Join Date
    Dec 2007
    Location
    soda springs Id.
    Posts
    21,247
    maven:
    i was not aware of this.
    thank you,as i was considering using it in my 8 mauser.
    this is also why i asked about using a filler,something i have taken to doing with most of my cast loads.
    especially with the middle rate powders.
    it's all an educated guess,,,, till the trigger is pulled.

    the more i find out about shootin boolits, the more it contradicts everything i ever learned about shooting jaxketed.

  4. #4
    Boolit Master Maven's Avatar
    Join Date
    Mar 2005
    Posts
    3,712

    Smile

    runfiverun, I don't know whether I still have the Winchester powder reloading pamphlet, but they were quite emphatic about not using 748 in the 8 x 57mm. When I discovered this, I wrote to Lyman about it, but Lyman never changed their loading data or recommendations for that cartridge. My own experience with 748 and the 8 x 57mm reinforces that warning: Hangfires and other evidence of poor combustion when using #323470. Since then, I've used a variety of other powders in that rifle with no problems of any kind. Btw, 48grs. (or more) of WC 860 + a mag. primer, but no filler and a 175gr. or heavier CB works very well (need to dry patch the bbl. every 5 - 10 shots though) as does 18grs. - 21grs. WC820 (standard primer).

  5. #5
    Boolit Master on Heavens Range
    felix's Avatar
    Join Date
    Mar 2005
    Location
    fort smith ar
    Posts
    11,631
    It very well could be the new line of Hercules/Alliant powders being brought out will not be of the high intensity type. I can't wait to read about range reports on them. These are the ones having a chemical giving less temperature sensitivity. I hope they will perform in low pressure situations, and that burn speed is somewhat independent of reasonable pressure and temperature. It would be nice. ... felix
    felix

  6. #6
    Boolit Master



    atr's Avatar
    Join Date
    Dec 2008
    Location
    Vashon Island WA
    Posts
    1,292
    Ive been using 748 in 308, 30-30 and 30-06 but not as a "reduced" load
    for example in the 308 with 170 boolit (311413 and 311299) 748/32-36gr is VERY accurate
    in my Savage model 99C. These loads were from the Lyman manual.
    In general Im usually running about 80%+ load density with this powder, which is NOT what some would call a "reduced" load. I do not use any dacron "fillers" in any of my loads.

    I would be very interested to hear more from those who have experience using this powder
    thanks
    atr

  7. #7
    Boolit Master on Heavens Range
    felix's Avatar
    Join Date
    Mar 2005
    Location
    fort smith ar
    Posts
    11,631
    You are using it correctly, just like you would 296 in its applications. ... felix
    felix

  8. #8
    Boolit Master odoh's Avatar
    Join Date
    Sep 2007
    Posts
    234
    It seems that the win data has that caution re most of its powders yet the hogdon counterparts don't have it.

  9. #9
    Moderator Emeritus
    JeffinNZ's Avatar
    Join Date
    Sep 2005
    Location
    Christchurch, New Zealand
    Posts
    7,011
    Quote Originally Posted by odoh View Post
    It seems that the win data has that caution re most of its powders yet the hogdon counterparts don't have it.
    I am pretty sure Hodgdon advise similar on H110 but you are correct about H335 which is basically W748.
    Thermal underwear style guru.
    "Exclusive international distributor of Jeff Brown Hunt Club clothing."
    Supplier to the rich(?) and infamous.

    Cheers from New Zealand

    Jeff.

    Floyd Files.
    Antipodians

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