You got hit by a combination of two things, a small deer (I think we who fill doe tags have done it at least once), and yes BT's are fast expanders made worst in that they are desinged for contact speeds of 2900 fps and less. The new Accubonds will probably handle the speed better, without blowing up.

But when you come to the party with that much energy wasted meat comes along. For years I shot a 338 wm for everything got sick of wasting meat so I started shooting it like a 243 clean ribshots only stay away from bone. ended up getting a 270 I can still shoot a deer from most any angle but I done loose nearly as much meat.

As long as the 160's reliably expand in a deer I'd say stay with one load.