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Thread: 44 mag CB loads with W296

  1. #1
    Boolit Man Tn Jim's Avatar
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    44 mag CB loads with W296

    I've been loading a Lyman 429421 cast from WW alloy with 2400 for years but 2400 hasn't shown up locally for over a year, and neither has Unique. Yesterday I found a 4 pound jug of W296 at the LGS so I grabbed it. My 2400 and Unique stash is down to roughly two pounds each so I'm tying to hold onto it as much as possible. My question is do any of you have any load advice for a 4 5/8" Ruger SBH using W296 and the #429421? Lyman Cast handbook shows 24-25 H110 so I'm thinking 23.5-25 W296.
    Life is tough, but it's tougher when you're stupid. -- John Wayne

  2. #2
    Boolit Master
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    I have used 296 in that charge range, with that same bullet, with good results, in the 29 S&W. Start low and work up.

  3. #3
    Boolit Master Targa's Avatar
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    I use 23.5 grains for that bullet, it works very well.

  4. #4
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    Those are the same identical powders, made in the same plant, one is badged Hodgdon, one is badged Winchester. Use the same data for both.

    The general rule is don't download either one below the suggested (published) starting charge weight for the specific boolit.
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  5. #5
    Boolit Grand Master


    Larry Gibson's Avatar
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    Try 23.5 - 25 gr. Also use a magnum level primer. CCI 350s or WLP.
    Larry Gibson

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

  6. #6
    Boolit Man
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    Not to get this thread off target but just got this mold last week. So do you guys just seat to the top ring? Going to powder coat some tomorrow.

  7. #7
    Boolit Master
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    I have shot quite a bit of W296/H110 in the 44 Mag with the 429421/H&G Keith bullets. Just seat and crimp in the crimp groove. Start a little low and work up to around 24 grains. I have used 25 at times but that was just me, not a recommendation. Somewhere between 23 to 24 you will find the sweet spot.
    Don't over think this.

  8. #8
    Boolit Buddy Krh1326's Avatar
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    Click image for larger version. 

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    Sorry, I’m on a kick, spitting out this data from Lee’s Modern Reloading 2nd Ed. … but if I get to give some help, like I’ve been getting…

    That is a 245 grain pb, correct ?
    This data is for 250 pb.. safe to use.

  9. #9
    Boolit Master
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    Quote Originally Posted by Krh1326 View Post
    Click image for larger version. 

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    Sorry, I’m on a kick, spitting out this data from Lee’s Modern Reloading 2nd Ed. … but if I get to give some help, like I’ve been getting…

    That is a 245 grain pb, correct ?
    This data is for 250 pb.. safe to use.
    You are not going to get ANY load data that is written in stone regardless of who says one can. Lyman's latest cast bullet manual lists the 429421 245 gr "Keith" at 25 grains H110 as max.

  10. #10
    Boolit Master
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    Speer #14 Manual with their so called "Keith" 250 grain bullet lists 23 H110 as max.

  11. #11
    Boolit Grand Master


    Larry Gibson's Avatar
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    Most Lyman 429421s (there have been several over the years) drop 245 - 255 gr bullets depending on the alloy. Other renditions of the "Keith" bullet are most often heavier with some upwards of 270+ gr. I've found 25 gr of H110 under the Lyman 429421 or the RCBS 44-250-KT at 252 - 255 gr, when pressure tested (Winchester cases, WLR primes), gives just under the SAAMI MAP of 36,000 psi. With the Lyman 429640 HP "Devastator" weighing 270 gr 23.5 gr of H110 (same lot) also runs just under the SAAMI MAP.
    Larry Gibson

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

  12. #12
    Boolit Master 243winxb's Avatar
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    W296- 23 grs- 250 gr lswc- WLP- Starline brass for me in m29.

  13. #13
    Boolit Man Tn Jim's Avatar
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    Quote Originally Posted by Krh1326 View Post
    Click image for larger version. 

Name:	C2AC4E2B-90C2-486D-89F8-51782C6F2D49.jpg 
Views:	90 
Size:	54.9 KB 
ID:	301762

    Sorry, I’m on a kick, spitting out this data from Lee’s Modern Reloading 2nd Ed. … but if I get to give some help, like I’ve been getting…

    That is a 245 grain pb, correct ?
    This data is for 250 pb.. safe to use.
    Yep, 245 grain and I'm using Winchester primers and Starline brass.
    Life is tough, but it's tougher when you're stupid. -- John Wayne

  14. #14
    Boolit Master

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    Lyman 429421 with 22gr. 296 with magnum primers in FC brass.
    My favorite 44 magnum load.
    I have shot thousands of this load over the years.

  15. #15
    Boolit Master Thumbcocker's Avatar
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    My mold drops a 255 grain 429421. 22.0 of 296 has done well for me in multiple revolvers. Standard primers.
    Paper targets aren't your friends. They won't lie for you and they don't care if your feelings get hurt.

  16. #16
    Boolit Buddy eastbank's Avatar
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    i shot alot of H-110 in a ruger SA in 45 colt, useing a 255gr cast hard. i had to use a very good crimp.

  17. #17
    Boolit Master

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    ^^^^^^ what eastbank said.
    I forgot to mention, Use a tight crimp.

  18. #18
    Boolit Master derek45's Avatar
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    Use a Magnum ( or winchester) primer and a FIRM ROLL CRIMP

    180grXTP / H110 goodness....

    .


    NRA LIFE Member

    USPSA/IPSC

  19. #19
    Boolit Master


    fecmech's Avatar
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    I shot many kegs of 296 behind the 429421 in Silhouette. I shot a 7.5" Ruger Super B with 25/296/429421 cast 50/50 WW/Lino. The load was very accurate and averaged 1400fps.
    "Masculine republics give way to feminine democracies, and feminine democracies give way to tyrannies.” Aristotle

  20. #20
    Boolit Bub
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    At what speed would you need to consider using a gas check? And I ask from the point of ignorance, having never loaded anything faster than about 900-1000 fps with cast.

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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