Originally Posted by signofbarsoom
It's definitely a cycling problem. Not being accustomed to semi-auto rifles its coming slowly but I realized that hand cycling always ejects a case. In other words the case stays positively attached to the bolt face until its fully retracted and the case is knocked out of the chamber by the ejector.
So why is the bolt not cycling all the way rearward??? Round goes bang, pressure shoves bolt back, but not all the way... so I figure there is too much resistance against the bolt.
It is hard to rack the slide back so I took it apart last night and cleaned it again. I really didn't find much more of that manufacturing grit inside. Must have got it the first time. Also, the bolt moves freely inside the rifle body. It's not a tight fit but its not too loose where it would bind if canted. I like my guns clean so I usually coat lightly with Breekfree CLP. Maybe I need to run my rifle wetter? So she is sitting in the safe with a thick coat of CLP inside. Unfortunately, it will be awhile before I get to take her out again. I racked it back a forth many times. Maybe its freed it up some but I'm not confident.
Two more things:
The recoil spring seems to be in fine shape. It doesn't bind at all and doesn't seem to have an excessive tension on it. Of course, that's not very scientific so if anyone has something to say about that let me know.
Finally, and this is probably a complete long shot, since I was shooting .223 I got 20rds of 5.56 to try. The rifle is chambered for it but it shouldn't have had a problem with the .223.
I think that I may be able to help ya. The first time I took out my Century Arms C93 Sporter the first round went off just fine, and then...FTE time! Failure to extract. It wouldn't extract the spent casing, but the next round fed right in beneath it! Aghhhh!!!!
Well that did it. I was so mad! After about 10 mintues of messing with the cocking tube and seeing that the bolt would not close all the way, I thought that I'd better try it again. BOOM, round fired successfully, but it was still a bolt action NIGHTMARE!!!
So, I went through about 30 rounds of manually working the cocking lever after each round I fired. Then it happened, the gun went into action (semi-auto that is). After that, I went through about 150 rounds, FTE free! I guess it just needed to be broken in. There must have been some grime or debris in the receiver that impeded the return action of the bolt, causing it to only go back partially.
BTW: I've only used Wolf 55 grain .223 FMJ ammo. I've since put about 400 rounds through her and she's worked like a champ.