My yellow box batch is great so far, smokey as hell, but no duds so far.
I have shot two cases of the Norc ammo one was yellow box the other case was white box. The ammo worked well, was dirty but for the price I have no complaints. For me it is cheap ammo to go to the range with and enjoy the day.
I have a case from November 95, shot about 120 rounds out of my Daniel Defense V5. I had one jam in the chamber, and had no clue how to clear it.. reefing on the charging handle had no affect. wedging a screwdriverin before the bolt and the receiver pulled it free.. hope I don't get any more of these jams. I was scared i'd have to bring the rifle home to work on it with a live round in the chamber.
Before sticking a screwdriver in there, did you try to mortar it? Most times it'll get it unjammed, just don't do like this guy...