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Thread: BP grain size

  1. #1
    Boolit Master

    Join Date
    Feb 2018

    BP grain size

    Iím just getting started in BP. For the time, I m starting by loading .45-70. cartridges. I was surprised to see a lot are using 11/2F and 1F powder. I was wondering if it is the same with muzzle loaders.


  2. #2
    Boolit Master pietro's Avatar
    Join Date
    Mar 2008
    New England

    The nice thing about BP handloads is that you can play with just about any BP grade/load and not have to fret about damage to the gun or shooter.

    I've used both FFg (2F) & FFFg (3F) in my .45 front stuffer, and have settled on FFFg for my uses.

    Fg (1F) is classically used for cannons, and may/may not pose ignition or performance issues in a smaller bore - I've no knowledge or experience with 1-1/2F.

    Experience is a wonderful thing - It lets you recognize a mistake, when you make it again.

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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