I just switched to the BTs this year. I shoot a 30-06, 150gr, about 2900-2950 mv. I had been using the Hornady 150 sp, simple bullet. I was not too happy with the exit hole diameter from that bullet - I wasn't convinced I was getting good expansion. But the deer were falling. So this year I went with the Noslers. I took a medium sized deer, 120 yds, front quartering shot. Went just above the front shoulder, into about 3 ribs, and did not exit. I think it did its job very well (he ran 1 yard down) even though it did not get out thru the back quarter. I am happy it did not. Im staying with this bullet another year.
I was leery about the switch, as I saw a 300wsm 150 create an entry and exit on the same side of a reasonably broadside deer - but I never thought he should have used a 150gr B-silvertip with a 300wsm. That deer was a bang flop, so my friend was satisfied.