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Thread: Lyman 55 accuracy

  1. #21
    Boolit Master



    atr's Avatar
    Join Date
    Dec 2008
    Location
    Vashon Island WA
    Posts
    1,758
    YES...technique !!!
    do everything the same
    One tip I can offer is to keep the cylinder filled to about the same level for each 10 to 15 rounds charged. The other thing I have found is that you need to use the correct slide pullout for the different powders.
    atr
    Death to every foe and traitor and hurrah, my boys, for freedom !

  2. #22
    Boolit Master
    Join Date
    Feb 2007
    Location
    South Western NC
    Posts
    2,005
    How accurate (consistent) the dropped weights from any volume measure/dispenser depends a lot on what the user considers accurate.

    Consistantiancy with any measure demands not only good operating technique but the powder type itself comes into play. Coarse powders are worst; flake powders tend to get jammed in the rotor; sphericals measure very well but they have limited burn rates and are (sometimes) hard to ignite. And all powders, including the same type, tend to have slightly varying mass per volume.

    Bottom line, anyone hoping to find a powder measure at any price that drops everything within a tenth grain each time he flips a lever is doomed to frustration. That's why there's a good market for powder tricklers.

    IMHO, when used correctly the old Lyman/Ideal 55 still works as well or better than any measure, that's why it has lasted so long in the market. But, to achieve its potential it has three sliding cavity adjustments; that means there's a learning curve to adjusting it properly for each powder type and volume/weight.
    Last edited by 1hole; 12-27-2019 at 09:18 PM.

  3. #23
    Boolit Master
    Join Date
    Jul 2013
    Location
    barry s wales uk
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    1,916
    I use a Lee ppm for flake powders ,keep the 55 for fine powders.

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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