TCbowHunter..........You really don't need to use anything other than what you have already! The TBBC is an excellent bullet for blackbear and will give you the best of both worlds, just like a Nosler Partiton but more so really. You get that football type wound channel and that bullet called the Trophy Bonded Bear Claw will in fact stay together and also give you the classic mushroom shape, along with very deep penetration too. I used them on elk, moose, Kudu, Eland and they work great.
Now I have spent a lot of money on trying to get Barnes bullets to shoot well eenough in my rifles over the years, not much luck there for a fact. Why even when I found a rifle that would give me 2 inch MOA at 100 yards, often those X-Bullets and Blue X Bullets would not open up in stock tank tests using water etc.
So my advice is to stick with what you already know works just great! I also have tried some of those TBS bullets in a long range 7mm mag rifle I have and once again, getting them to shoot tight groups and open up 100% of the time was not the case. So I tell shooters and hunters that Nosler's Partition is a very good bullet, along with TBBC, Woodleigh and Swift A Frames if your looking for deep penetration and a premium bullet.