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Thread: Lyman M Die

  1. #21
    Boolit Master uscra112's Avatar
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    I've got several expanders just for .38 Special. The temper of the brass alone makes it respond differently as it's expanded, so to get just the right sizing for my full wadcutter target loads I pick one or another as needed.
    flectere si nequeo superos, acheronta movebo

  2. #22
    Boolit Master Petander's Avatar
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    Quote Originally Posted by uscra112 View Post
    I've got several expanders just for .38 Special. The temper of the brass alone makes it respond differently as it's expanded, so to get just the right sizing for my full wadcutter target loads I pick one or another as needed.
    Exactly.
    .
    My new Lyman M-die is for one tried and true bullet/pistol combination only.

    I sometimes feel that expanders are being overlooked a bit. We talk alloys and bore sizes to no end and forget about expanders and chambers.

  3. #23
    Boolit Master uscra112's Avatar
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    As someone has already pointed out, cramming a soft cast bullet into a case that's even .001 undersize effectively sizes that bullet down from what you had when you lubed it..
    flectere si nequeo superos, acheronta movebo

  4. #24
    Boolit Master
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    I also make my own m type neck expander/flaring tools. I use 1/2" fine thread bolts turned to fit as needed inside a piece of drilled and threaded 7/8x14 all thread.

  5. #25
    Boolit Buddy
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    RCBS' newer die sets have an "M type" expander...at least for .38-357 Magnum. It works pretty good, but recently, I had the plug out of my Lyman .38 "M" die, and it seems to have a longer expansion diameter. So, I think I'll use the Lyman die with my RCBS dies for a while, and see how it all works out.

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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