I bought a box for a pal of mine to use in his .280 Weatherby MK-V Ultralite. He shot a moose in the willows at something like 70 yards, the moose died. I don't recall if his shot was a pass through or not; I suspect it was because he likes to show off the bullets he's collected out of critters and I didn't see that one. He said that the accuracy with these bullets was uninspiring, but that must be considered in the context of a rifle that only shoots 168 gr Bergers passingly well and everything else poorly. I had hoped that the long bearing surface would cause it to shoot better than it did. I keep telling him to let me experiment with a pressure point in the barrel channel, but thus far he hasn't warmed up to the idea. Anyway, the Naturalis appears to be a well designed bullet for heavy game in circumstances where the choice of a round nose is prudent. Once my .280 AI appears, I might be tempted to try them myself, but there are so many very good bullets out there.