Originally Posted by u238
You should not cut forward of the back oring on the bolt when the bolt is pulled all the way back. Just cocked is not far enough back, because the bolt blows back past that point.
Edit: K&P, what in the hell kind of feedneck is that? It's gigantic...
i believe the big feed necks were to keep some weight on the ballstack using the balls themselvs to prevent popcorning in the loader due to blow back.