I used them for a 308 with RL15 a couple years back:
-great accuracy, but they were a little bit seating-depth sensitive
-shot them into a few different types of media… good expansion, but almost always slipped its core WITHOUT BLOWING UP. The base is actually pretty heavy, and I was impressed with the fact that it seemed to maintain some semblance of a solid form to theoretically travel on through for a bloodtrail
-shot two deer broadside behind the shoulder at about 75yd. Both ran, but not far. Both bullets exited, but not a huge exit wound. I wasn't overwhelmed by their on game performance, but I wasn't disappointed either.
I want to try them again in the future, but they won't replace accubonds as long as I have them. Accubonds are so reliable and accurate that I absolutely hate to move away from them as long as I still have them, but… they have been SO hard to find, and have gotten to be SO expensive that I will have to consider my options as they dwindle on my shelf. I have already made the change to Hornady BTSPs for my .270 Win since I could not find any 140 NABs for it. I have not been disappointed, as the interlock is actually a pretty tough bullet and plenty consistent/accurate