bent casing

First post , Hi guys . I bought a Century C93 about 6 weeks ago . Contrary to internet lore , I had no jamming or extraction problems . I did find something curious , though . After firing 20 rds , a buddy , (who reloads for me) , was picking up the spent brass & noticed that each one had a...

I bought a new PTR-91 GI from Atlantic Arms. This would be my first HK-91 style weapon and I'd like to get little info from the experts before I start using the gun heavily. I shot 20 rounds through it yesterday. Most rounds ejected about 20-30 feet, but about 5 out of the twenty empty casings...