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Thread: Primer compound quantity and type LPP Vs LRP

  1. 08-06-2022, 01:27 PM #1
    Shuz
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    Primer compound quantity and type LPP Vs LRP

    Does anyone know if there is a difference in amount and/or type of priming compound between large rifle and large pistol primers?
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  2. 08-06-2022, 01:45 PM #2
    bruce381
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    do not know but would guess that in a "type" like regular or magnum there would be MORE or LESS of the same as small vs large.
    BUT Mag vs regular I would think a hotter or different mix.
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  3. 08-06-2022, 02:11 PM #3
    super6
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    Since most primers built today are built around lead styfanate (sp) I suspect metal powders are involved, Magnesium or aluminum.
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  4. 08-09-2022, 12:05 PM #4
    Shuz
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    I contacted Federal Cartridge Corp and they said that the primer compounds between large rifle and large pistol were different in quantity and type. Also the cups are different in thickness and height. The anvils are different also.
    So...it's no wonder we can get different results when we interchange them on light pressure loads.
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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