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Thread: .50-45

  1. #1
    Boolit Mold
    Join Date
    Jul 2022
    Posts
    2

    .50-45

    Can a .50-90 be shortened to make .50-45? Is the rim diameter the same?

  2. #2
    Boolit Bub Cowboy32's Avatar
    Join Date
    Jun 2018
    Posts
    40
    I have shortened the .50-70 to .50-45 and have shot them with no trouble in my Navy rolling block carbine.

  3. #3
    Boolit Master
    elk hunter's Avatar
    Join Date
    Jan 2009
    Location
    Central Oregon
    Posts
    1,538
    I too use 50-70 cases for the 50-45-400 Navy Carbine. The thickness of the 50-90 brass when trimmed so short may be too thick to chamber when loaded. In that case they would need to be inside reamed or outside turned in order to work. It would be easy enough to cut one down and try it. The rim diameter of the 50-70 government and the 50-90 Sharps are nearly identical so that should work. If you already have the 50-90 brass I would think you could trade it for 50-70 quite easily. Lately 50-70 brass has been scarce but not impossible to locate.

    Hope this helps.
    BIG OR SMALL I LIKE THEM ALL, 577 TO 22 HORNET.

  4. #4
    Boolit Master
    Join Date
    Sep 2010
    Posts
    1,606
    I make them out of 8M/M LEBEL. trim and load, fire form, with 30 grs, of 3fg black. I use old Berdan primed military cases & drill out primer pocket's and load with LR, RIFLR PRIMERS. seal them in with fingernail lacquer, or red grade LOCKTITE.

  5. #5
    Boolit Master
    Join Date
    Sep 2010
    Posts
    1,606
    if the neck's split on the 1948 dated mil. fired brass no matter it is usually above, up from where that you need to cut off with a DERMEL.

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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