[DEADEYE 1]

I bought this old Marlin MI carbine m99 as a parts gun or one that I could fix. I cleaned and refinished the gun and have taken it apart so many times that I probably could do it blindfolded. Up till this gun, I had a perfect record in that I had been able to fix every gun that I tackled. But no not this one. I have replaced all the guts, inside working parts of the gun. I even got it to [properly eject a empty hull and put the next one in the chamber, but no it will not shoot then because the bolt did not go far enough back to cock the bolt. I have replaced all the springs, adjusted the springs, in fact I am taking a vacation from working on it right now. I bought some of the parts from Numrich, but to my surprise, I found that Brownells also carries the parts for this gun. One theory that I have is that the chamber may be so worn that when a bullet is fired that it momentarily catches in the chamber. It was stovepiping and jamming badly but I have at least improved that to where if you cock it manually, it will fire and eject then not fire because the hammer was not cocked. Any ideas would be appreciated. I could take an old Winchester apart 30 years ago that would jam and get it back going.There is something that I have overlooked. I next plan to polish the chamber and if that doesn,t work,. buy a new barrel that has been in storage for years. Thanks again for any ideas

 

[bubbat]

Did you replace the recoil spring guide? It might be a little to long and not letting the bolt fully cycle to cock the bolt or maybe there is dirt or something in the hole in the bolt where the guide goes? Just guessing.

 

[DEADEYE 1]

I think that I replaced that guide. I am going to go back in it and check anything that could be catching or causing friction. When I work the bolt back it moves smoothly. I even tried another bolt. I took it on as a challenge because another guy had tried to fix it but failed. I also tried different types of ammo. I believe that the gun was possibly a military trainer, so there is no telling how many rounds have been through it. I have a Marlin 75 carbine that is a fine little shooter. I have never had any problems with any Marlin, I just think that the chamber may be excessively worn. If I buy a barrel for it and that does not cure it, then I will just keep it for parts.