That's only around 50% weight retention. I don't think that's very good for medium game. I'd rather shoot Partitions and get 80% or better weight retention.
Like Roskoe pointed out, these bullets were recovered from sand and sandstone behind the target at the range. Most other bullets that I've pulled from the same stuff are nothing but bits and pieces. I'm thouroughly impressed with the way those Accubonds held together. A partition will lose the front end, but still retain weight....haven't shot any partitions to revover though. No doubt a partition is a superb bullet and I would shoot them if they weren't so expensive, but for whitetails and the possibilities of long range shots I decided the accubond was a perfect choice for me.