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Thread: Are all 310 CMR dies so marked?

  1. #1
    Boolit Master

    Join Date
    Mar 2005
    Aberdeen NC & Wellington FL

    Are all 310 CMR dies so marked?

    Was Lyman marking all CMR dies as CMR from the first or is it possible to find CMR dies that still have the number code? I often don't have brass to try out in the sets I have. I really rab=n across an unusual one recently, 6 m/m Lee Navy!

  2. #2
    Boolit Master
    Bent Ramrod's Avatar
    Join Date
    Apr 2005
    Southern Arizona
    All the ones I've seen are so marked. They were made by Lyman in conjunction with the Tru-Line Jr., so they are modern compared to most of the old Ideal nutcracker dies. The ones I've seen are marked LYMAN, the caliber and CMR at the top. Can't be absolutely sure, of course; every time somebody makes a definitive statement about the old stuff, an example that proves the exception comes out of an attic somewhere.

    Wow; a 6mm Navy Tru-Line die is a real rara avis. I recently found a RCBS set in that caliber from the estate of someone who must have been one of the crankiest of gun cranks. Do you have the whole set?

    You can generally tell the difference, as the Combination MR has both the neck size die and the decapper/expander in the same die. the old Ideals for the tong tools had the muzzle resizer, a universal decapper and a neck expander in three separate dies.

  3. #3
    Boolit Grand Master
    Join Date
    Nov 2008
    Central VA
    Good morning Trooper Dan. I have discovered that with Ideal and Lyman tools it is unwise to use the words “all” and “never” except with modifiers like “almost” or “nearly”. In the days when they were really cranking these tools out, sometimes they didn’t take time to follow the rules we now try to impose on them. Part of the challenge and frustration, I would say.
    "It aint easy being green!"

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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