I can't say on the 100s, but I do know the 120s work splendidly on caribou. It's the single bullet I've used more than any other on them and it works just fine. Of course these are some of the ones made ten years ago or so, so they may be a bit less sturdy, but that never became an issue. They work fine and I've yet to have one "blow up". They are also very accurate in my M70 with either RL 19 or 7828. Another sleeper is the 129 Interlock, if your rifle likes them.
