Keith;
Yes the LACA newsletter was where I read of Bucks experience. As I recall it though he didn't actually blow up anything but quit when the bbls started blowing open. I have probably heard of more guns with rotary bolts being blown open than any other bolting system. As I recall this was a big problem with some NIDs, I recall Elmer Keith encountered it with one.
As I understand it when the bbl hook puts enough upward pressure on the bolt it simply cams it around, the slope of the hook being greater than its coefficient of friction. Sort of like pushing down on a watermelon seed & squirting it out.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra