I have a customer who had me clean his BAR because it would not eject all of the time. You fired the first round, it would extract and eject, round number two would load, fire, extract and lay sticking out of the ejection port, the action would jam and would not close on round three. If I shoot nickel plated cases, factory new rounds, it functioned fine for me. The customer is using brass cases, factory new, and it jams, no reloaded rounds are being used. what can be done to fix this problem?
You may have multiple problems; it sounds as though the extractor is not holding on correctly so make sure it fits right. Next, polish the chamber as that will cause less stress on the extractor. Make sure the gas regulator is the correct one for the caliber and the hole is the correct size. Make sure the piston is clean and free to move as it should. Make sure the ejector is fitted correctly. You will also want to check the gas hole in the barrel for the correct size. You may have to contact Browning or one of their service centers to get the specs. on the assorted gas holes etc. Otherwise simply fit the parts as the AGI videos show.
Answer:
The nickel cases slide easier over rough spots than the brass ones do since the nickel plating is much harder than brass. This indicates that any or all of the problems Ken mentions could be the culprit. Polish the chamber and fit the extractor before you go farther. – Jack
