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Thread: Ruger 77/357 mould

  1. #1

    Ruger 77/357 mould

    I just picked up a NIB Ruger 77/357 and am looking for a 220-245 grain mould preferably with a flat nose that I may get modified for hollow points.

    Has anyone actually measured there bore or know if they prefer .358 or .359 slugs?

    I am hoping powder coating will take care of any leading issues.

  2. #2
    Boolit Master
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    From what I've read, they run on the tight side; mine slugged at 0.3565".

  3. #3
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    JonB_in_Glencoe's Avatar
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    I would worry more about COAL, with that heavy of a boolit...220gr would be a pretty long 357 boolit.
    Those Ruger rotary magazines are notoriously short...I suspect Ruger designed them for the standard factory ammo.

  4. #4
    Boolit Master
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    Jun 2012
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    That's why they invented .38 Spl brass.

    FWIW, I have worked up very accurate 220gr wadcutter loads, and have seen 250gr FN loads posted - however, the stability of those is a significant challenge.

  5. #5
    Boolit Master





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    Heavy for 357 IMHO

  6. #6
    Boolit Master

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    I run 200gr and 225gr .358 molds in my 77/357. Punching a 4" steel target at 130y shows much authority
    Please feel free to use my Infowars.com/Prisonplanet.tv account
    login: tja6435
    password: woodeneyeball

  7. #7
    There are guys running the Saeco #352 245gr .358 loaded in 38special brass to fit in the magazine. They will have allot more knock down power at a subsonic 1000fps than a 200 grain bullet. I think one modified for 220-230 hollow points would be nice. I think they are driving them to 1300-1600 fps supersonic but I would prefer a 200 grain HP at 2000-2200fps for that.

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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