Many of my friends at the range know I reload and often donate their brass to a worthy cause ( me ).
While cleaning and checking brass I noticed something strange. Some of the cartridge cases have a very thick 'liner' beginning just below where the projectile will seat.
All these 9mm cases were headstamped Maxxtech. This reinforcing liner substantially reduces the inside volume of the cartridge case, and if charged with a quantity of powder safe in a 'normal' case could lead to dangerously high pressure and possibly catastrophic results.
I first ran across those cases at one of Brownie’s TFP classes a few years ago, and had to sort a bunch out. I throw them away when any show up in range brass, and would never attempt to reload any myself. :thumbsdwn
I have some Maxxtech 9mm 155gr FMJ from 2015 that was lying around. I pulled a bullet from the case of one. It did not have the liner on it like yours. The bullet contained 6.17294 grains of powder.
That's interesting... I wish I knew who had been shooting them so I could compare with your information. I'm using 4.6 grains of W231 with 115 grain plated bullets. I wonder what powder Maxxtech uses.
I am not a loader, nor do I know much of anything about it but that is VERY interesting. Have you done any research into it to find an answer? If nothing online I wonder if they would provide an answer should one inquire.
I've picked some up on the range, but never tried to reload it (I have so much 9mm brass, that it isn't worth wondering if I should use it). I was told (fact or fiction, I don't know) that these cases were actually make from two separate pieces.
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