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Thread: 7.62x25 from .223

  1. #21
    Boolit Master
    Join Date
    Feb 2008
    Location
    Eureka MT
    Posts
    2,512
    Both my tok and my cz have very tight throats and barrels in the 311 312 area. I can't load a bullet larger than 308 even using real 7.62 x25 brass without thinning the necks. I have formed some from 38 spl cases and found them to work well but you still have to make sure you have proper neck diameter after the bullet has been seated.

  2. #22
    Boolit Master
    Join Date
    Mar 2013
    Location
    Northeast
    Posts
    2,888
    I called Lee Precision. The tech guy told me that the sizing dies are exactly the same for the 30 Mauser (7.63 x25) and the Tokarev (7.62x25) despite the case length difference. My muddled brain thinks that the shorter case will not have the shoulder set back enough (and a shorter neck). He said to send the die back and they'll measure it out. Maybe.
    I'm still waiting on the Starline brass. That will help with questions.
    I tried a .38 SP case. It formed well and I gotta work with it some more.
    I did a chamber cast that I'm still examining.
    I ordered 50 rounds of Prvi Partizan. I gotta fire this gun.

  3. #23
    Boolit Master



    skeettx's Avatar
    Join Date
    Jul 2009
    Location
    Amarillo, Texas
    Posts
    4,102
    This will work

    1. use an RCBS 7.62x25 trim die and an extended shell holder.
    2. trim all that sticks up with a jewelers hack saw
    3. final trim in Forster trimmer with a .308 Forster internal reamer
    https://www.midsouthshooterssupply.c...t308-diameter)
    4. full length size in an RCBS sizing die
    Load as normal

    Mike
    4.
    NRA Benefactor 2004 USAF RET 1971-95

  4. #24
    Boolit Master

    Join Date
    Feb 2011
    Location
    Oklahoma
    Posts
    505
    If the sized case chamber but loaded rounds don't you need to inside ream the brass.

  5. #25
    Boolit Master
    Join Date
    Mar 2013
    Location
    Northeast
    Posts
    2,888
    Sized cases don't chamber. Loaded dummy rounds definitely don't. Lee Precision also suggested removing material from the bottom of the die to set the shoulder back, though that will negate any warranty.
    Starline brass will be here Friday. Hopefully that will work.

  6. #26
    Boolit Master
    Join Date
    Mar 2013
    Location
    Northeast
    Posts
    2,888
    I got the Starline brass from Bayou Brass and Ammo, loaded up some dummy rounds, and all is good. They chamber and eject. Tomorrow I'll try loaded rounds.

  7. #27
    Boolit Master
    Join Date
    Mar 2013
    Location
    Northeast
    Posts
    2,888
    Went to the range with PPU factory ammo and a dozen handloads (78 gr cast bullets sized to .309, 5 grs Titegroup). The gun handled everything perfectly (both mags). Out of 30 rounds, I only lost 3 cases into the ozone layer. Great gun to shoot- due to its heft, there's not much recoil. And it's as accurate as I let it be. Next time I'll bring the chronograph.
    The military .223 brass is too thick to form and hold a proper shoulder. I'll ream and thin the brass before I try forming, not after. Reaming the neck isn't enough - the brass that forms the shoulder below the neck has to be thinned. Rookie mistake.

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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