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Thread: rcbs specialty mold id

  1. #1
    Boolit Man
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    rcbs specialty mold id

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    waiting for arrival but not sure what it is for ?
    rcbs think its a 50 / 70 winchester mold but they not too sure either lol

  2. #2
    Boolit Master
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    It should make nice, relatively light bullets for the 500 S&W (0.500" groove). They would be undersized for the 50-70 cartridge (0.515" groove). The SWC design would be unusual for a paper-patched bullet.

  3. #3
    Boolit Man
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    many thanks for you reply
    should be here soon so i will cast some and see what it produces lol

  4. #4
    Boolit Master
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    It is the right diameter for a 505 Gibbs, but really light weight (and SWC).

  5. #5
    Boolit Master

    rockrat's Avatar
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    Its for the 50AE IIRC

  6. #6
    Boolit Man
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    arrived and casted 2 samples and they measured .504 and 360 gns each give or take 1/10 gn

  7. #7
    Boolit Man
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    Alabama
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    Sounds about right. A lot of the RCBS molds are spec'ed for linotype. So they cast a little undersized and about 10% heavy.

    Bill

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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