What Happened Here? .308 case ribbed

BigBlack · 12-01-2008, 08:59 AM

Anyone care to guess what happened to these, .308 Federal Case. They were picked up at the range and feel as if they were fire formed to a chamber with rifling's cut in. They were also very sooty all over as you can see in the rim and neck area. They were nearly completely black from soot.

Anyway would like your thoughts!

atlas366 · 12-01-2008, 09:17 AM

HK 91, they have fluted chambers. It's not rifling. It is used to increase reliability with the HK's roller locked blowback action. Makes the brass look weird, but isn't anything unusual.

Ridge Runner · 12-01-2008, 09:18 AM

those rounds were fired from a H&K model 91, its a semi auto with a delayed roller block action and a fluted chamber.
RR

VAhuntr · 12-01-2008, 09:34 AM

Interesting!

bronko22000 · 12-01-2008, 09:40 AM

Interesting, Wierd, but interesting. Hmmm I guess you do learn something new every day.

statjunk · 12-01-2008, 12:52 PM

CSI - Hunting.net

Tom

Ridge Runner · 12-01-2008, 01:39 PM

and they shoot very well, let a friend talk me out of mine, helluva deer gun!
RR

eldeguello · 12-02-2008, 11:33 AM

They were fired in a fluted chamber. There are military weapons that have chambers fluted that way to aid in extraction of the fired cases. I had a Russian SVT40 Tokarev once that had the neck of the chamber cut like that. Ruined cases after several reloadings.....