He was hot on a doe when he got his ticket punched......hit him a little far back but a bang flop none the less.I spent an hour on the phone with a Hornady ballistics tech and he said they keep all lots of previously made bullets JIC . He said he would duplicate my load and do some testing,then get back to me. I am using 58gr /RE#15/286gr bullet /Lapau brass /Fed mag primer.I have pulled all the Hornady bullets and swapped them with same weight Partitions.........that should cure that but hunting is over here in Alberta anyways.We have filled all our tags a week ago so now just cutting up the last two deer.The Hornady 286gr did the same thing on moose shoulder blade at 180 yards a couple years previously.I thought they would at least hold together on a soft boned deer but ,I guess not.A guy wouldn't want to walk in on a black bear bait and be greeted by a sow grizzly with cubs with this bullet now would you? Harold