I absolutely love the Accubond. I think it is a better bullet dollar-for-dollar then the Partition. I load 200gr Accubonds in my .300H&H @ ~2700fps MV.
I could get more velocity, but it shoots plenty flat enough even at that sedate velocity and it absolutely pancakes deer. I've shot 2 whitetail bucks with that bullet and had complete end-to-end penetration, the only complaint would be that the bullets exited so I could not check them.
Any Accubonds I have shot into test medium have demonstrated wonderful expansion.
I also load a 200gr Accubond in my 8x57 and flattened a whitetail with that last November. Same thing, no bullet to examine, it went right through (broadside shot). I get 2650fps MV out of those, in the 8x57.
I load 140gr Accubonds in my .270Win. Shot a pretty decent whitetail with that. Put three shots right through it... bullets kept on going...
I load the 140's to 3025fps MV.
FWIW, the Hornady Interbond I believe is every bit as good as the Accubond and it's even cheaper yet.