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Thread: Marlin 336CB 38/55 black powder load

  1. #1
    Boolit Buddy ELFEGO BACA's Avatar
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    Jan 2007
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    Idaho Territory USA
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    Cool Marlin 336CB 38/55 black powder load

    After shooting smokeless for nearly two years I decided to try a black powder load in my 38/55!
    Click image for larger version. 

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    I was pleasantly surprised.
    My load was as good as smokeless.
    I did have to increase the elevation by 5 minutes or 10 inches when shooting at the 200 yard gongs.
    I will continue on this shooting adventure!
    I used a .03 veg wad and newsprint on the base of the bullet.
    Compression was about 1/16”!

    Election Day I chronograhed this load.
    The average velocity for six chronographed shots was 1206 feet/second.


    Another load was tried with two changes- CCI200 primers and 45.3 grains of Goex FFFg powder!
    The average velocity of eight shots recorded was 1339 feet/second.
    The bullet of choice comes from a Lyman #380681.
    Last edited by ELFEGO BACA; 11-08-2018 at 12:25 PM. Reason: Added velocity data
    The midterms are over celebrate!

  2. #2
    Boolit Master
    Join Date
    Apr 2013
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    676
    Quote Originally Posted by ELFEGO BACA View Post
    After shooting smokeless for nearly two years I decided to try a black powder load in my 38/55!
    Click image for larger version. 

Name:	BFD5C3DF-9117-4AA6-8CBB-AA8E03DD15A5.jpg 
Views:	14 
Size:	49.6 KB 
ID:	229701
    I was pleasantly surprised.
    My load was as good as smokeless.
    I did have to increase the elevation by 5’ when shooting at the 200 yard gongs.
    I will continue on this shooting adventure!
    I used a .03 veg wad and newsprint on the base of the bullet.
    Compression was about 1/16”!
    Was 5 feet a mistake or did you mean 5 inches ?

  3. #3
    Boolit Buddy ELFEGO BACA's Avatar
    Join Date
    Jan 2007
    Location
    Idaho Territory USA
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    199
    Five minutes of elevation.
    That translates to 10 inches at 200 yards.
    The midterms are over celebrate!

  4. #4
    Boolit Buddy
    Join Date
    Sep 2006
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    134
    With What Bullet?
    tx
    beltfed/arnie

  5. #5
    Boolit Master
    Join Date
    Jun 2008
    Posts
    1,300
    I use 46 gr of Swiss 1.5 fg with 250 gr flatnosed Lyman bullet. Works pretty well. Well enough to kill an antelope at 170 yds. But I have not been terribly pleased with the accuracy and not sure what to do to improve it. Need more experimentation I think.

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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