TexasCHLforum.com

Again, the poster said that both rounds were unfired. That can not be failure to extract. Somehow, it sounds like the top round in the magazine is being pushed forward into the chamber by the second round which is pushed forward by the bolt closing. Normally only the top round is going to be fed. If the top round is chambered and the second round is behind it the magazine is somehow allowing the second round to be driving the top round into the chamber. Would be curious to mark the top round with a red spot and see which round is actually being fed into the barrel and which round is jammed behind it. Have you tried a different magazine?