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Thread: A good load development piece by R Moritz, BPCN

  1. #1
    Boolit Master

    Chill Wills's Avatar
    Join Date
    Oct 2011

    A good load development piece by R Moritz, BPCN

    In the latest edition of the Black Powder Cartridge News, Fall 2021, Rick Moritz authors one of the clearest descriptions of how the rifle barrel vibrates while the bullet is traveling to the end of the muzzle and the effect it has on the bullet impact down range producing the least vertical spread.
    I use a close variation of the load development method Rick describes and it is good to see it laid out and written in a very easy to read and understand essay.
    Check it out.
    Michael Rix
    Last edited by Chill Wills; 09-04-2021 at 05:46 PM.
    Chill Wills

  2. #2
    Boolit Bub
    Join Date
    Jul 2021
    Big Sky country, MT
    Chill wills, haven't read the article yet but will shortly but wanted to chime in.

    I have not shot black powder yet but am just getting in to it.
    But have done extensive reloading of many calibers with smokeless over the last 50 years and although there are many many things that effect accuracy the one point MOST beginning shooters/reloaders don't recognize is barrel harmonics, even though as they reload for accuracy that is what they are actually adjusting.
    A few points I have learned over the years for accuracy.
    Each fired round must have the same ignition and pressure going down the barrel, to control the snake your barrel turns into before the bullet leaves the barrel. "Harmonic vibration".
    Velocity is great but it can or cannot equal accuracy. Adjust your velocity to control the snake your barrel turns into as pressure builds.
    Squeeze and follow through are a must for consistency.
    Just mentioning this as it might help some beginning reloaders in their quest for finding a perfect round. Thanks for the article.

  3. #3
    Boolit Buddy
    Join Date
    Dec 2007
    I just read that article, it's very good. I do enjoy every issue of BPCN.

  4. #4
    Boolit Buddy
    Join Date
    Nov 2014
    BBL harmonics can have great effect on bullet stability and impact. Harmonics can have such effect as to destroy space rockets!
    Do I have a knife....Ive got my pants on don't I.

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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