Going through brass from many trips to the range and came across these pieces of 308 LC match. What rifle does this and reason behind it. Never seen it before till this evening. Just curious and if anyone knows I would like to know.
Weird looking brass
- Thread starter Kangbeef
- Start date
Heavily fluted chamber to aid extraction? HK-91 or LaRue OBR with "xtraxn". (SVT-41 also in 7.62x54R)
I'm guessing a machine gun. The fluted chamber helps reduce "cook off" of a cartridge.
Those fluted cases are hard to resize. You might get it stuck in the die. Also, the rim looks bent where the extractor grabbed it. I would toss it.
Looks like a typical G3 fired brass to me.
It's 36 year old brass.
Maybe the dude said fuck it I won't be around much longer so I may as well let it rip.
That's severely formed from a fluted chamber, perhaps something wrong with the chamber of whoever's gun. Shouldn't see that kind of brass flow.
Here's a pick of a bunch run thru a CETME in 2017, with a follow on pick of them run thru a modified harbor freight rock tumbler using egg shaped chips instead of pins:
Never sized them, just gave them away.
Here's a pick of a bunch run thru a CETME in 2017, with a follow on pick of them run thru a modified harbor freight rock tumbler using egg shaped chips instead of pins:
Never sized them, just gave them away.
Could be a G3 or HK91, but I don't really recall it making flat sports...
That's not the purpose of the fluting....it's sole purpose is to aid in extraction.
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That's because the fluting is out of spec, it's too wide allowing the brass to flow into the flute and stretch tight in between.
IIRC, the chamber flute specs for 7.62mm HK91/G3 and variants is 12 flutes @1.9mm wide by .75mm at it's deepest point.
Case was likely fired in a cheap OOS barrel used in a parts kit build.
BTW, Cetmes have fluted chambers too but off the top of my noggin I don't recall the chamber flute specs but pretty sure they are the same as HK.
Never had the opportunity to hold or shoot any of the rifles yall have spoken aboit. One day I will have a chance. It looked like the rifling was continued into the chamber but fluting makes perfect sense with the amount of heat created.
G3's (HK/PTR91) & CETME's are pretty nifty, rival to the FN FAL's as the "Arms of the Free World".
Own or have owned variations of all 3 (PTR,CETME,FAL).
Neat-o! From a historical perspective, however today's 7.62x51/.308 rifles are simply more practical & accurate, if the shooter does their part.
Found a handful of 10mm brass with the flute marks mixed in a bag of once fired range brass I picked up at a gunshop couple years ago.
Mp5’s have fluted chambers & leave their marks on the brass …it reloads fine though
That was my
That was my first thought as well, some roller delayed stuff and FAL’s I believe have fluted chambers.
Definitely HK91 fired brass. I've reloaded enough of it. Some softer brass gets flute marks like that. They never do come out if you reload and shoot them again.
