what magazines to get for my AR 7.62x39?

[1mlt]

Got the 7.62x39 drum yesterday. Took it to the range today and after 12 rounds and 12 jams, I threw it in the dirt... Junk waste of money. Every single round nose dived into the breech face. After dropping a live round into the chamber, releasing the bolt catch and reinserting the drum, I could get it to fire one round. The duramags, asc, and unimags all functioned flawlessly. However, I don't know if it was due to the cold or what but the binary mode would not fire the second round on the trigger release. I could fire it normally in binary mode after the trigger reset but it would not fire on the release. It worked fine two weeks ago. I don't know what the problem is.

Korean/Chinese junk is my guess.

[cvasqu03]

I realize this is slightly off topic, but as some have chimed in about the 75rd drums, has anyone had any experience with the new production 100rd drums?   I have an original 75rd Chinese, but really wanted a 100rd one to round out (no pun intended) my collection.  I even have a pouch all ready for it.