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Thread: Old Argentine Mauser conversion brass cracking up

  1. #21
    Boolit Buddy DonMountain's Avatar
    Join Date
    Nov 2011
    Location
    Mid-Missouri
    Posts
    845
    After "unloading" the Argentine Mauser brass that had been converted from 30-06 brass 30 years ago, I inspected all of them and discovered that more than half of them had cracks about 1/2" down the case from the mouth down over the shoulder. So all of them went in the trash and I am ordering new, real Argentine Mauser brass with boxer primers and start over again. Next time I do a conversion like this I will anneal the cases before the first time I load them. And I better go back and check all of those other converted cases I am using. Although now days I shoot mostly low pressure lead projectile loads in them and just go to bigger calibers for deer hunting and leave these small caliber lead bullet guns for target shooting. Especially those Swedish Mausers!

  2. #22
    Boolit Buddy
    Join Date
    Mar 2010
    Location
    NC Arkansas
    Posts
    411
    Instead of the trash can, sell to a recycling center or melt them and cast into useful items such as muzzle loader furniture.

  3. #23
    Boolit Master

    Join Date
    Dec 2009
    Posts
    2,236
    With that many cracks, I can't blame you for just scrapping them all.

    Just yesterday I bought several boxes of .45 Colt: someone else's reloads from the 1970's. They were cheap, component value. I just got done pulling them all down. They were all clearly labeled, so now I have a bunch of primed brass, half a pound of Unique, and a few pounds of cast bullets to recycle into new cast bullets.

    A couple of the boxes turned out to be unfired brass, one was marked as twice fired, and another thrice fired. On the thrice fired ones some of them pulled too easy so I looked and about a dozen of them had cracked necks, just from sitting.

    I think that brass that is a bit hardened from repeated firing or reforming without annealing just can't take the neck tension over the years. I assume they probably would have been fine 40 years ago.

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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