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Thread: Question on .357 magnum and standard primers

  1. #21
    Boolit Master

    Winger Ed.'s Avatar
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    Quote Originally Posted by rockrat View Post
    Do you have any small rifle primers? Thought that spm primers were equivalent to sr primers.
    I'd have to look it up to double check, but I think rifle primers are a tiny bit 'taller' than pistol primers.
    But I've used them in .357Mag before too, and they did fine for me.
    If anything, the primer sat flush instead of being slightly recessed in the primer pocket.
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  2. #22
    Boolit Buddy 1006's Avatar
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    Large Rifle are taller than Large Pistol, but I think all small primers are the same dimensions- roughly.

  3. #23
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    Quote Originally Posted by dale2242 View Post
    There is no need for magnum primers with tite group or unique.
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  4. #24
    Boolit Grand Master



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    Quote Originally Posted by Winger Ed. View Post
    I'd have to look it up to double check, but I think rifle primers are a tiny bit 'taller' than pistol primers.
    But I've used them in .357Mag before too, and they did fine for me.
    If anything, the primer sat flush instead of being slightly recessed in the primer pocket.
    For small rifle/pistol primers they are the same size. Large rifle nd large pistol are different heights.

    https://ballistictools.com/articles/...d-diameter.php
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  5. #25
    Boolit Master
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    Quote Originally Posted by M-Tecs View Post
    For small rifle/pistol primers they are the same size. Large rifle nd large pistol are different heights.

    https://ballistictools.com/articles/...d-diameter.php
    That is my understanding at least as far as CCI primers are concerned.
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  6. #26
    Boolit Buddy
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    As long as I can remember 2400 has been my go to powder for 357 & 44mag. Never have used a mag pistol primer . Never have wanted for more power or accuracy.

  7. #27
    Boolit Master
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    Standard Winchester primers are made to ignite graphite coated, double base ball 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